Details
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Bug
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Status: Resolved
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Minor
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Resolution: Cannot Reproduce
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Impala 2.0, Impala 2.2
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None
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None
Description
when impala running about 3 months,the same sql will become slowly.
According to the profile,i see the compile_timer_ take about 2m32s.
The code detail is below.
SCOPED_TIMER(compile_timer_);
// JIT compile all codegen'd functions
for (int i = 0; i < fns_to_jit_compile_.size(); ++i)
If reboot the impala,CodeGen performance will normal.