splitVector command fails on a collection with collation

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    • Type: Bug
    • Resolution: Done
    • Priority: Major - P3
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    • Affects Version/s: 3.6.8
    • Component/s: Index Maintenance
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      mongos> use chetan
switched to db chetan
mongos> db.createCollection("contacts", {collation: {locale: "fr"}})
{ "ok" : 1 }
mongos> db.contacts.insert({category : 1})
WriteResult({ "nInserted" : 1 })
mongos> db.contacts.insert({category : 2})
WriteResult({ "nInserted" : 1 })
mongos> db.contacts.insert({category : 3})
WriteResult({ "nInserted" : 1 })
mongos> db.contacts.insert({category : 4})
WriteResult({ "nInserted" : 1 })
mongos> db.contacts.insert({category : 5})
WriteResult({ "nInserted" : 1 })
mongos> db.runCommand({splitVector : "chetan.contacts", keyPattern : { "_id" : 1}, maxChunkSize : 256})
{
 "ok" : 0,
 "errmsg" : "couldn't find index over splitting key { _id: 1.0 }",
 "code" : 27,
 "codeName" : "IndexNotFound"
}
mongos>

      mongos> db.getCollectionInfos()
[
 {
 "name" : "contacts",
 "type" : "collection",
 "options" : {
 "collation" : {
 "locale" : "fr",
 "caseLevel" : false,
 "caseFirst" : "off",
 "strength" : 3,
 "numericOrdering" : false,
 "alternate" : "non-ignorable",
 "maxVariable" : "punct",
 "normalization" : false,
 "backwards" : false,
 "version" : "57.1"
 }
 },
 "info" : {
 "readOnly" : false
 },
 "idIndex" : {
 "v" : 2,
 "key" : {
 "_id" : 1
 },
 "name" : "_id_",
 "ns" : "chetan.contacts",
 "collation" : {
 "locale" : "fr",
 "caseLevel" : false,
 "caseFirst" : "off",
 "strength" : 3,
 "numericOrdering" : false,
 "alternate" : "non-ignorable",
 "maxVariable" : "punct",
 "normalization" : false,
 "backwards" : false,
 "version" : "57.1"
 }
 }
 }
]
 

       

      Show
        mongos> use chetan switched to db chetan mongos> db.createCollection("contacts", {collation: {locale: "fr"}}) { "ok" : 1 } mongos> db.contacts.insert({category : 1}) WriteResult({ "nInserted" : 1 }) mongos> db.contacts.insert({category : 2}) WriteResult({ "nInserted" : 1 }) mongos> db.contacts.insert({category : 3}) WriteResult({ "nInserted" : 1 }) mongos> db.contacts.insert({category : 4}) WriteResult({ "nInserted" : 1 }) mongos> db.contacts.insert({category : 5}) WriteResult({ "nInserted" : 1 }) mongos> db.runCommand({splitVector : "chetan.contacts", keyPattern : { "_id" : 1}, maxChunkSize : 256}) { "ok" : 0, "errmsg" : "couldn't find index over splitting key { _id: 1.0 }", "code" : 27, "codeName" : "IndexNotFound" } mongos> mongos> db.getCollectionInfos() [ { "name" : "contacts", "type" : "collection", "options" : { "collation" : { "locale" : "fr", "caseLevel" : false, "caseFirst" : "off", "strength" : 3, "numericOrdering" : false, "alternate" : "non-ignorable", "maxVariable" : "punct", "normalization" : false, "backwards" : false, "version" : "57.1" } }, "info" : { "readOnly" : false }, "idIndex" : { "v" : 2, "key" : { "_id" : 1 }, "name" : "_id_", "ns" : "chetan.contacts", "collation" : { "locale" : "fr", "caseLevel" : false, "caseFirst" : "off", "strength" : 3, "numericOrdering" : false, "alternate" : "non-ignorable", "maxVariable" : "punct", "normalization" : false, "backwards" : false, "version" : "57.1" } } } ]    
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      I created a collection with collation specified.

      Wrote 5 documents in the collection.

      Ran splitVector command. But, hit an error that "couldn't find index over splitting key { _id: 1.0 }"

      Commands performed in Mongodb shell are written in "Steps to Reproduce" section.

      Any help in alternative solution to splitVector is appreciated.

            Assignee:
            Kelsey Schubert
            Reporter:
            Chetan Paithane
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              Created:
              Updated:
              Resolved: