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Contributor
Posts: 33
Registered: ‎12-13-2013

Re: Very slow CodeGen taking 80% of runtime

Never mind my last comment: I was confused because the DISABLE_CODEGEN_ROWS_THRESHOLD setting @Tim Armstrong recommended was not yet documented, so tried using the closest thing I found (SCAN_NODE_CODEGEN_THRESHOLD) which wasn't applicable to our query.

 

Turns out even though not yet documented, DISABLE_CODEGEN_ROWS_THRESHOLD is available and works as Tim suggested, in our CDH 5.13 cluster.

Cloudera Employee
Posts: 353
Registered: ‎07-29-2015

Re: Very slow CodeGen taking 80% of runtime

@mauriciothat's great news! Thanks for the update. We do need to get this documented though.

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