/*@jsxRuntime automatic @jsxImportSource react*/ const {Fragment: _Fragment, jsx: _jsx, jsxs: _jsxs} = arguments[0]; const {useMDXComponents: _provideComponents} = arguments[0]; function _createMdxContent(props) { const _components = Object.assign({ h1: "h1", h2: "h2", p: "p", br: "br", h3: "h3", div: "div", pre: "pre", code: "code", span: "span", em: "em", strong: "strong", ul: "ul", li: "li" }, _provideComponents(), props.components); return _jsxs(_Fragment, { children: [_jsx(_components.h1, { children: "Chunks" }), "\n", _jsx(_components.h2, { children: "Overview" }), "\n", _jsxs(_components.p, { children: ["These are groups of docs.", _jsx(_components.br, {}), "\n", "Chunks live at one shard at a time.", _jsx(_components.br, {}), "\n", "All docs within the chunk \"bounds\" live in the same chunk.", _jsx(_components.br, {}), "\n", "THe shard key cardinality & frequency determine the number of chunks.", _jsx(_components.br, {}), "\n", "Config servers hold the mapping of chunks to shards."] }), "\n", _jsx(_components.h2, { children: "Docs and Shards and Chunks" }), "\n", _jsxs(_components.p, { children: ["Docs contain fields.", _jsx(_components.br, {}), "\n", "Fields can be used as shard keys.", _jsx(_components.br, {}), "\n", "As soon as a collection gets sharded, a single chunk gets created.", _jsx(_components.br, {}), "\n", "The chunk goes from \"MinKey\" to \"MaxKey\".", _jsx(_components.br, {}), "\n", "Min key is inclusive.", _jsx(_components.br, {}), "\n", "Max key is exclusive.\nThe vals that the shard key holds defines the \"key space\" of the sharding collection."] }), "\n", _jsx(_components.h3, { children: "Over Time" }), "\n", _jsx(_components.p, { children: "As time goes on, the cluster splits the initial chunk into many. This distributes data evenly between shards." }), "\n", _jsx(_components.h2, { children: "Leveraging Mongos cli to inspect Chunk data" }), "\n", _jsx(_components.div, { className: "remark-highlight", children: _jsx(_components.pre, { className: "language-js", children: _jsxs(_components.code, { className: "language-js", children: ["# use a mongos instance", _jsx(_components.span, { className: "token operator", children: "/" }), "conneciton", _jsx(_components.span, { className: "token punctuation", children: "," }), " mont mongo or mongod\n\nshow dbs\n\nuse config\n\nshow collections\n# one ", _jsx(_components.span, { className: "token keyword", children: "of" }), " the collections is called ", _jsx(_components.span, { className: "token string", children: "'chunks'" }), "\n\n# inspect an example ", _jsx(_components.span, { className: "token keyword", children: "of" }), " a chunk\ndb", _jsx(_components.span, { className: "token punctuation", children: "." }), _jsx(_components.span, { className: "token property-access", children: "chunks" }), _jsx(_components.span, { className: "token punctuation", children: "." }), _jsx(_components.span, { className: "token method function property-access", children: "findOne" }), _jsx(_components.span, { className: "token punctuation", children: "(" }), _jsx(_components.span, { className: "token punctuation", children: ")" }), "\n\n# should ", _jsx(_components.span, { className: "token keyword control-flow", children: "return" }), " something like", _jsx(_components.span, { className: "token spread operator", children: "..." }), "\n", _jsx(_components.span, { className: "token punctuation", children: "{" }), "\n ", _jsx(_components.span, { className: "token literal-property property", children: "_id" }), _jsx(_components.span, { className: "token operator", children: ":" }), " config", _jsx(_components.span, { className: "token punctuation", children: "." }), _jsx(_components.span, { className: "token property-access", children: "system" }), _jsx(_components.span, { className: "token punctuation", children: "." }), _jsx(_components.span, { className: "token property-access", children: "sessions" }), _jsx(_components.span, { className: "token operator", children: "-" }), "id_MinKey", _jsx(_components.span, { className: "token punctuation", children: "," }), "\n ", _jsx(_components.span, { className: "token literal-property property", children: "ns" }), _jsx(_components.span, { className: "token operator", children: ":" }), " config", _jsx(_components.span, { className: "token punctuation", children: "." }), _jsx(_components.span, { className: "token property-access", children: "system" }), _jsx(_components.span, { className: "token punctuation", children: "." }), _jsx(_components.span, { className: "token property-access", children: "sessions" }), _jsx(_components.span, { className: "token punctuation", children: "," }), "\n ", _jsx(_components.span, { className: "token literal-property property", children: "min" }), _jsx(_components.span, { className: "token operator", children: ":" }), " ", _jsx(_components.span, { className: "token punctuation", children: "{" }), "\n ", _jsx(_components.span, { className: "token literal-property property", children: "_id" }), _jsx(_components.span, { className: "token operator", children: ":" }), " ", _jsx(_components.span, { className: "token punctuation", children: "{" }), " ", _jsx(_components.span, { className: "token literal-property property", children: "$minKey" }), _jsx(_components.span, { className: "token operator", children: ":" }), " ", _jsx(_components.span, { className: "token number", children: "1" }), " ", _jsx(_components.span, { className: "token punctuation", children: "}" }), "\n ", _jsx(_components.span, { className: "token punctuation", children: "}" }), _jsx(_components.span, { className: "token punctuation", children: "," }), "\n ", _jsx(_components.span, { className: "token literal-property property", children: "max" }), _jsx(_components.span, { className: "token operator", children: ":" }), " ", _jsx(_components.span, { className: "token punctuation", children: "{" }), "\n ", _jsx(_components.span, { className: "token literal-property property", children: "_id" }), _jsx(_components.span, { className: "token operator", children: ":" }), " ", _jsx(_components.span, { className: "token punctuation", children: "{" }), " ", _jsx(_components.span, { className: "token literal-property property", children: "$maxKey" }), _jsx(_components.span, { className: "token operator", children: ":" }), " ", _jsx(_components.span, { className: "token number", children: "1" }), " ", _jsx(_components.span, { className: "token punctuation", children: "}" }), "\n ", _jsx(_components.span, { className: "token punctuation", children: "}" }), _jsx(_components.span, { className: "token punctuation", children: "," }), "\n ", _jsx(_components.span, { className: "token literal-property property", children: "shard" }), _jsx(_components.span, { className: "token operator", children: ":" }), " m103", _jsx(_components.span, { className: "token operator", children: "-" }), "shard1", _jsx(_components.span, { className: "token punctuation", children: "," }), "\n ", _jsx(_components.span, { className: "token literal-property property", children: "lastmod" }), _jsx(_components.span, { className: "token operator", children: ":" }), " ", _jsx(_components.span, { className: "token function", children: _jsx(_components.span, { className: "token maybe-class-name", children: "Timestamp" }) }), _jsx(_components.span, { className: "token punctuation", children: "(" }), _jsx(_components.span, { className: "token number", children: "1" }), _jsx(_components.span, { className: "token punctuation", children: "," }), _jsx(_components.span, { className: "token number", children: "0" }), _jsx(_components.span, { className: "token punctuation", children: ")" }), _jsx(_components.span, { className: "token punctuation", children: "," }), "\n ", _jsx(_components.span, { className: "token literal-property property", children: "lastmodEpoch" }), _jsx(_components.span, { className: "token operator", children: ":" }), " ", _jsx(_components.span, { className: "token function", children: _jsx(_components.span, { className: "token maybe-class-name", children: "ObjectId" }) }), _jsx(_components.span, { className: "token punctuation", children: "(" }), _jsx(_components.span, { className: "token spread operator", children: "..." }), _jsx(_components.span, { className: "token punctuation", children: ")" }), "\n", _jsx(_components.span, { className: "token punctuation", children: "}" }), "\n# min ", _jsx(_components.span, { className: "token operator", children: "&" }), " max fields indicate the ", _jsx(_components.span, { className: "token maybe-class-name", children: "BOUNDs" }), " ", _jsx(_components.span, { className: "token keyword", children: "of" }), " the chunk\n\n\n# another method ", _jsx(_components.span, { className: "token keyword control-flow", children: "for" }), " inspecting chunk stats\nsh", _jsx(_components.span, { className: "token punctuation", children: "." }), _jsx(_components.span, { className: "token method function property-access", children: "status" }), _jsx(_components.span, { className: "token punctuation", children: "(" }), _jsx(_components.span, { className: "token punctuation", children: ")" }), "\n\n# see the sibling file chunks", _jsx(_components.span, { className: "token operator", children: "-" }), "sh", _jsx(_components.span, { className: "token operator", children: "-" }), "status", _jsx(_components.span, { className: "token punctuation", children: "." }), _jsx(_components.span, { className: "token property-access", children: "js" }), " ", _jsx(_components.span, { className: "token keyword control-flow", children: "for" }), " a complete example ", _jsx(_components.span, { className: "token keyword", children: "of" }), " the output ", _jsx(_components.span, { className: "token operator", children: "-" }), " its about ", _jsx(_components.span, { className: "token number", children: "30" }), " lines\n", _jsx(_components.span, { className: "token spread operator", children: "..." }), "\n", _jsx(_components.span, { className: "token literal-property property", children: "chunks" }), _jsx(_components.span, { className: "token operator", children: ":" }), "\n # could look somethin like", _jsx(_components.span, { className: "token spread operator", children: "..." }), "\n m103", _jsx(_components.span, { className: "token operator", children: "-" }), "shard1 ", _jsx(_components.span, { className: "token number", children: "2" }), "\n m103", _jsx(_components.span, { className: "token operator", children: "-" }), "shard1 ", _jsx(_components.span, { className: "token number", children: "1" }), "\n", _jsx(_components.span, { className: "token spread operator", children: "..." }), "\n"] }) }) }), "\n", _jsx(_components.h2, { children: "Chunks & Chunk Sizes" }), "\n", _jsxs(_components.p, { children: ["The number of chunks that the shard key \"allows\" ", _jsx(_components.em, { children: "might" }), " define the maximum number of shards that the system can hold."] }), "\n", _jsx(_components.h3, { children: "Chunk Size" }), "\n", _jsx(_components.p, { children: "Mongo has a default set to 64MB. This chunk size can be configured to be between 1mb && 1gb(1024mb). This can be configured during run time." }), "\n", _jsx(_components.h3, { children: "Adjusting the Chunk size setting" }), "\n", _jsx(_components.div, { className: "remark-highlight", children: _jsx(_components.pre, { className: "language-js", children: _jsxs(_components.code, { className: "language-js", children: ["# adjust the mongos instance chunksize ", _jsx(_components.span, { className: "token keyword", children: "in" }), " the config", _jsx(_components.span, { className: "token punctuation", children: "." }), _jsx(_components.span, { className: "token property-access", children: "settings" }), " db", _jsx(_components.span, { className: "token punctuation", children: "." }), _jsx(_components.span, { className: "token property-access", children: "collections" }), "\n\nuse config\ndb", _jsx(_components.span, { className: "token punctuation", children: "." }), _jsx(_components.span, { className: "token property-access", children: "settings" }), _jsx(_components.span, { className: "token punctuation", children: "." }), _jsx(_components.span, { className: "token method function property-access", children: "save" }), _jsx(_components.span, { className: "token punctuation", children: "(" }), _jsx(_components.span, { className: "token punctuation", children: "{" }), _jsx(_components.span, { className: "token literal-property property", children: "_id" }), _jsx(_components.span, { className: "token operator", children: ":" }), " ", _jsx(_components.span, { className: "token string", children: "\"chunksize\"" }), _jsx(_components.span, { className: "token punctuation", children: "," }), " ", _jsx(_components.span, { className: "token literal-property property", children: "value" }), _jsx(_components.span, { className: "token operator", children: ":" }), " ", _jsx(_components.span, { className: "token number", children: "2" }), _jsx(_components.span, { className: "token punctuation", children: "}" }), _jsx(_components.span, { className: "token punctuation", children: ")" }), "\n"] }) }) }), "\n", _jsxs(_components.p, { children: [_jsx(_components.strong, { children: "NOTE" }), ": the above setting change does not change the ", _jsx(_components.em, { children: "data" }), ", only the ", _jsx(_components.em, { children: "setting" }), "."] }), "\n", _jsx(_components.h3, { children: "Adjust the data Chunk sizes" }), "\n", _jsxs(_components.p, { children: ["First, lets add some data so that mongos ", _jsx(_components.em, { children: "has" }), " a bunch of data to split"] }), "\n", _jsx(_components.div, { className: "remark-highlight", children: _jsx(_components.pre, { className: "language-js", children: _jsxs(_components.code, { className: "language-js", children: ["# ", _jsx(_components.span, { className: "token keyword module", children: "import" }), " ", _jsx(_components.span, { className: "token constant", children: "MORE" }), " data into the mongos instance\nmongoimport ", _jsx(_components.span, { className: "token operator", children: "--" }), "username ", _jsx(_components.span, { className: "token string", children: "'csrs_admin'" }), " ", _jsx(_components.span, { className: "token operator", children: "--" }), "password ", _jsx(_components.span, { className: "token string", children: "'csrs_admin_pw'" }), " ", _jsx(_components.span, { className: "token operator", children: "--" }), "authenticationDatabase ", _jsx(_components.span, { className: "token string", children: "'admin'" }), " ", _jsx(_components.span, { className: "token operator", children: "--" }), "db ", _jsx(_components.span, { className: "token string", children: "\"m103-example\"" }), " ", _jsx(_components.span, { className: "token operator", children: "--" }), "collection ", _jsx(_components.span, { className: "token string", children: "\"products\"" }), " ", _jsx(_components.span, { className: "token operator", children: "--" }), "port ", _jsx(_components.span, { className: "token number", children: "26000" }), " products", _jsx(_components.span, { className: "token punctuation", children: "." }), _jsx(_components.span, { className: "token property-access", children: "part2" }), _jsx(_components.span, { className: "token punctuation", children: "." }), _jsx(_components.span, { className: "token property-access", children: "json" }), "\n# should ", _jsx(_components.span, { className: "token keyword control-flow", children: "return" }), _jsx(_components.span, { className: "token spread operator", children: "..." }), "\n# ", _jsx(_components.span, { className: "token operator", children: "<" }), "the", _jsx(_components.span, { className: "token operator", children: "-" }), "date", _jsx(_components.span, { className: "token operator", children: ">" }), " connected to", _jsx(_components.span, { className: "token operator", children: ":" }), " mongodb", _jsx(_components.span, { className: "token operator", children: ":" }), _jsx(_components.span, { className: "token operator", children: "/" }), _jsxs(_components.span, { className: "token regex", children: [_jsx(_components.span, { className: "token regex-delimiter", children: "/" }), _jsx(_components.span, { className: "token regex-source language-regex", children: "localhost:26000" }), _jsx(_components.span, { className: "token regex-delimiter", children: "/" })] }), "\n# ", _jsx(_components.span, { className: "token operator", children: "<" }), "the", _jsx(_components.span, { className: "token operator", children: "-" }), "date", _jsx(_components.span, { className: "token operator", children: ">" }), " ", _jsx(_components.span, { className: "token punctuation", children: "[" }), "#", _jsx(_components.span, { className: "token spread operator", children: "..." }), _jsx(_components.span, { className: "token spread operator", children: "..." }), _jsx(_components.span, { className: "token spread operator", children: "..." }), _jsx(_components.span, { className: "token spread operator", children: "..." }), _jsx(_components.span, { className: "token spread operator", children: "..." }), _jsx(_components.span, { className: "token spread operator", children: "..." }), _jsx(_components.span, { className: "token spread operator", children: "..." }), _jsx(_components.span, { className: "token punctuation", children: "." }), _jsx(_components.span, { className: "token punctuation", children: "." }), _jsx(_components.span, { className: "token punctuation", children: "]" }), " m103", _jsx(_components.span, { className: "token operator", children: "-" }), "example", _jsx(_components.span, { className: "token punctuation", children: "." }), _jsx(_components.span, { className: "token property-access", children: "products" }), " ", _jsx(_components.span, { className: "token number", children: "2" }), _jsx(_components.span, { className: "token punctuation", children: "." }), "76MB", _jsx(_components.span, { className: "token operator", children: "/" }), _jsx(_components.span, { className: "token number", children: "44.5" }), _jsx(_components.span, { className: "token function", children: _jsx(_components.span, { className: "token maybe-class-name", children: "MB" }) }), " ", _jsx(_components.span, { className: "token punctuation", children: "(" }), _jsx(_components.span, { className: "token number", children: "6.2" }), _jsx(_components.span, { className: "token operator", children: "%" }), _jsx(_components.span, { className: "token punctuation", children: ")" }), "\n# ", _jsx(_components.span, { className: "token operator", children: "<" }), "the", _jsx(_components.span, { className: "token operator", children: "-" }), "date", _jsx(_components.span, { className: "token operator", children: ">" }), " ", _jsx(_components.span, { className: "token punctuation", children: "[" }), "###", _jsx(_components.span, { className: "token spread operator", children: "..." }), _jsx(_components.span, { className: "token spread operator", children: "..." }), _jsx(_components.span, { className: "token spread operator", children: "..." }), _jsx(_components.span, { className: "token spread operator", children: "..." }), _jsx(_components.span, { className: "token spread operator", children: "..." }), _jsx(_components.span, { className: "token spread operator", children: "..." }), _jsx(_components.span, { className: "token spread operator", children: "..." }), _jsx(_components.span, { className: "token punctuation", children: "]" }), " m103", _jsx(_components.span, { className: "token operator", children: "-" }), "example", _jsx(_components.span, { className: "token punctuation", children: "." }), _jsx(_components.span, { className: "token property-access", children: "products" }), " ", _jsx(_components.span, { className: "token number", children: "6" }), _jsx(_components.span, { className: "token punctuation", children: "." }), "34MB", _jsx(_components.span, { className: "token operator", children: "/" }), _jsx(_components.span, { className: "token number", children: "44.5" }), _jsx(_components.span, { className: "token function", children: _jsx(_components.span, { className: "token maybe-class-name", children: "MB" }) }), " ", _jsx(_components.span, { className: "token punctuation", children: "(" }), _jsx(_components.span, { className: "token number", children: "14.3" }), _jsx(_components.span, { className: "token operator", children: "%" }), _jsx(_components.span, { className: "token punctuation", children: ")" }), "\n# ", _jsx(_components.span, { className: "token operator", children: "<" }), "the", _jsx(_components.span, { className: "token operator", children: "-" }), "date", _jsx(_components.span, { className: "token operator", children: ">" }), " ", _jsx(_components.span, { className: "token punctuation", children: "[" }), "#####", _jsx(_components.span, { className: "token spread operator", children: "..." }), _jsx(_components.span, { className: "token spread operator", children: "..." }), _jsx(_components.span, { className: "token spread operator", children: "..." }), _jsx(_components.span, { className: "token spread operator", children: "..." }), _jsx(_components.span, { className: "token spread operator", children: "..." }), _jsx(_components.span, { className: "token spread operator", children: "..." }), _jsx(_components.span, { className: "token punctuation", children: "." }), _jsx(_components.span, { className: "token punctuation", children: "]" }), " m103", _jsx(_components.span, { className: "token operator", children: "-" }), "example", _jsx(_components.span, { className: "token punctuation", children: "." }), _jsx(_components.span, { className: "token property-access", children: "products" }), " ", _jsx(_components.span, { className: "token number", children: "9" }), _jsx(_components.span, { className: "token punctuation", children: "." }), "82MB", _jsx(_components.span, { className: "token operator", children: "/" }), _jsx(_components.span, { className: "token number", children: "44.5" }), _jsx(_components.span, { className: "token function", children: _jsx(_components.span, { className: "token maybe-class-name", children: "MB" }) }), " ", _jsx(_components.span, { className: "token punctuation", children: "(" }), _jsx(_components.span, { className: "token number", children: "22.1" }), _jsx(_components.span, { className: "token operator", children: "%" }), _jsx(_components.span, { className: "token punctuation", children: ")" }), "\n# ", _jsx(_components.span, { className: "token operator", children: "<" }), "the", _jsx(_components.span, { className: "token operator", children: "-" }), "date", _jsx(_components.span, { className: "token operator", children: ">" }), " ", _jsx(_components.span, { className: "token punctuation", children: "[" }), "#######", _jsx(_components.span, { className: "token spread operator", children: "..." }), _jsx(_components.span, { className: "token spread operator", children: "..." }), _jsx(_components.span, { className: "token spread operator", children: "..." }), _jsx(_components.span, { className: "token spread operator", children: "..." }), _jsx(_components.span, { className: "token spread operator", children: "..." }), _jsx(_components.span, { className: "token punctuation", children: "." }), _jsx(_components.span, { className: "token punctuation", children: "." }), _jsx(_components.span, { className: "token punctuation", children: "]" }), " m103", _jsx(_components.span, { className: "token operator", children: "-" }), "example", _jsx(_components.span, { className: "token punctuation", children: "." }), _jsx(_components.span, { className: "token property-access", children: "products" }), " ", _jsx(_components.span, { className: "token number", children: "13" }), _jsx(_components.span, { className: "token punctuation", children: "." }), "8MB", _jsx(_components.span, { className: "token operator", children: "/" }), _jsx(_components.span, { className: "token number", children: "44.5" }), _jsx(_components.span, { className: "token function", children: _jsx(_components.span, { className: "token maybe-class-name", children: "MB" }) }), " ", _jsx(_components.span, { className: "token punctuation", children: "(" }), _jsx(_components.span, { className: "token number", children: "31.1" }), _jsx(_components.span, { className: "token operator", children: "%" }), _jsx(_components.span, { className: "token punctuation", children: ")" }), "\n# ", _jsx(_components.span, { className: "token operator", children: "<" }), "the", _jsx(_components.span, { className: "token operator", children: "-" }), "date", _jsx(_components.span, { className: "token operator", children: ">" }), " ", _jsx(_components.span, { className: "token punctuation", children: "[" }), "#########", _jsx(_components.span, { className: "token spread operator", children: "..." }), _jsx(_components.span, { className: "token spread operator", children: "..." }), _jsx(_components.span, { className: "token spread operator", children: "..." }), _jsx(_components.span, { className: "token spread operator", children: "..." }), _jsx(_components.span, { className: "token spread operator", children: "..." }), _jsx(_components.span, { className: "token punctuation", children: "]" }), " m103", _jsx(_components.span, { className: "token operator", children: "-" }), "example", _jsx(_components.span, { className: "token punctuation", children: "." }), _jsx(_components.span, { className: "token property-access", children: "products" }), " ", _jsx(_components.span, { className: "token number", children: "17" }), _jsx(_components.span, { className: "token punctuation", children: "." }), "4MB", _jsx(_components.span, { className: "token operator", children: "/" }), _jsx(_components.span, { className: "token number", children: "44.5" }), _jsx(_components.span, { className: "token function", children: _jsx(_components.span, { className: "token maybe-class-name", children: "MB" }) }), " ", _jsx(_components.span, { className: "token punctuation", children: "(" }), _jsx(_components.span, { className: "token number", children: "39.1" }), _jsx(_components.span, { className: "token operator", children: "%" }), _jsx(_components.span, { className: "token punctuation", children: ")" }), "\n# ", _jsx(_components.span, { className: "token operator", children: "<" }), "the", _jsx(_components.span, { className: "token operator", children: "-" }), "date", _jsx(_components.span, { className: "token operator", children: ">" }), " ", _jsx(_components.span, { className: "token punctuation", children: "[" }), "###########", _jsx(_components.span, { className: "token spread operator", children: "..." }), _jsx(_components.span, { className: "token spread operator", children: "..." }), _jsx(_components.span, { className: "token spread operator", children: "..." }), _jsx(_components.span, { className: "token spread operator", children: "..." }), _jsx(_components.span, { className: "token punctuation", children: "." }), _jsx(_components.span, { className: "token punctuation", children: "]" }), " m103", 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">" }), " ", _jsx(_components.span, { className: "token number", children: "258390" }), " ", _jsx(_components.span, { className: "token function", children: "document" }), _jsx(_components.span, { className: "token punctuation", children: "(" }), "s", _jsx(_components.span, { className: "token punctuation", children: ")" }), " imported successfully", _jsx(_components.span, { className: "token punctuation", children: "." }), " ", _jsx(_components.span, { className: "token number", children: "0" }), " ", _jsx(_components.span, { className: "token function", children: "document" }), _jsx(_components.span, { className: "token punctuation", children: "(" }), "s", _jsx(_components.span, { className: "token punctuation", children: ")" }), " failed to ", _jsx(_components.span, { className: "token keyword module", children: "import" }), _jsx(_components.span, { className: "token punctuation", children: "." }), "\n\n\n"] }) }) }), "\n", _jsx(_components.h2, { children: "Jumbo Chunks and Disproportional Chunks" }), "\n", _jsxs(_components.p, { children: ["Jumbo chunks happen over time. These can be damaging.", _jsx(_components.br, {}), "\n", "Data can be disproportionately added to a set of dat ain a single chunk, based on the shard key & shard key value. This is like a lot of docs starting with the letter \"W\" where each letter of the alphabet is a shard key/val."] }), "\n", _jsx(_components.h3, { children: "These are marked" }), "\n", _jsx(_components.p, { children: "the db 'knows' about these." }), "\n", _jsx(_components.h3, { children: "These are not balanced" }), "\n", _jsx(_components.p, { children: "the db skips these when rebalancing the chunks. This is too big to be moved." }), "\n", _jsx(_components.h3, { children: "Might Not be Splittable" }), "\n", _jsx(_components.p, { children: "Depending on the frequency of the shard key, these might not be splittable." }), "\n", _jsx(_components.h2, { children: "Thoughts" }), "\n", _jsxs(_components.ul, { children: ["\n", _jsx(_components.li, { children: "Chunk Ranges can change over time" }), "\n", _jsx(_components.li, { children: "Several Docs associated with the same chunk must live in the same shard" }), "\n"] })] }); } function MDXContent(props = {}) { const {wrapper: MDXLayout} = Object.assign({}, _provideComponents(), props.components); return MDXLayout ? _jsx(MDXLayout, Object.assign({}, props, { children: _jsx(_createMdxContent, props) })) : _createMdxContent(props); } return { default: MDXContent };