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  1. Core Server
  2. SERVER-100515

[histogramCE] "Data distribution values must be monotonically increasing" with non-ascii character, x64

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    • Type: Icon: Bug Bug
    • Resolution: Unresolved
    • Priority: Icon: Major - P3 Major - P3
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    • Affects Version/s: None
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    • Query Optimization
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      db.foo.drop();
const string_docs = [];

for (let i = 32; i < 127; i++) {
	string_docs.push({a: String.fromCharCode(i)});
}

string_docs.push({a: 'Алабала'});

db.foo.insert(string_docs);
db.foo.runCommand({analyze: "foo", key: "a"});
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      db.foo.drop(); const string_docs = []; for (let i = 32; i < 127; i++) { string_docs.push({a: String .fromCharCode(i)}); } string_docs.push({a: 'Алабала' }); db.foo.insert(string_docs); db.foo.runCommand({analyze: "foo" , key: "a" });
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      If there is a non-ascii character in the dataset along with ascii characters, analyze will fail as follows. This issue seems to be reproducible only on x64, and not on arm.

      Enterprise test> db.foo.runCommand({analyze: "foo", key: "a"});
MongoServerError: PlanExecutor error during aggregation :: caused by :: Data distribution values must be monotonically increasing, however encountered 126 before -48.43823654584429

            Assignee:
            Unassigned Unassigned
            Reporter:
            philip.stoev@mongodb.com Philip Stoev
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              Created:
              Updated: