Details
Critical - P2 Description
We have come across a problem that was introduced with this change: SERVER-34012. The exact line causing this is https://github.com/mongodb/mongo/blame/master/src/mongo/db/matcher/expression_tree.cpp#L250.
This problem can only be seen on MongoDB v5, earlier versions work properly.
Steps to reproduce:
Create "some" collection and then run:
db.getCollection("some").aggregate({$match: { "$or" : [ { "x" : "a" }, { "x" : "b" }, { "x" : /c/ }] } }) |
Expected output: No failure.
Output:
uncaught exception: Error: command failed: {
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"ok" : 0,
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"errmsg" : "Failed to optimize pipeline :: caused by :: Failed to optimize expression :: caused by :: Incorrect number of non-equivalent expressions",
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"code" : 3401204,
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"codeName" : "Location3401204"
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} with original command request: {
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"aggregate" : "FileNodeVersions",
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"pipeline" : [
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{
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"$match" : {
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"$or" : [
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{
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"x" : "a"
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},
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{
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"x" : "b"
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},
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{
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"x" : /c/
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}
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]
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}
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}
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],
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"cursor" : {
|
|
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},
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"lsid" : {
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"id" : UUID("af1c7696-912f-4ad8-a53b-8eb9db5c0162")
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}
|
Attachments
Issue Links
- is related to
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SERVER-34012 Planner's logic for taking union of index bounds intervals is slow for large $or queries
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- Closed
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