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https://issues.apache.org/jira/browse/IMPALA-11223?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Joe McDonnell resolved IMPALA-11223.
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Fix Version/s: Impala 4.3.0
Resolution: Fixed
> ASM files from different fragments conflict when using asm_module_dir
> ---------------------------------------------------------------------
>
> Key: IMPALA-11223
> URL: https://issues.apache.org/jira/browse/IMPALA-11223
> Project: IMPALA
> Issue Type: Bug
> Components: Backend
> Affects Versions: Impala 4.1.0
> Reporter: Joe McDonnell
> Assignee: Quanlong Huang
> Priority: Major
> Fix For: Impala 4.3.0
>
>
> For debugging codegen, it is useful to be able to inspect the generated
> assembly. The asm_module_dir startup parameter directs Impala to dump the
> codegen assembly to files in a directory. It currently dumps the assembly for
> a query into '${query_id}.asm', but there are actually multiple codegen
> operations going on in a single query and the output from one will overwrite
> the output from previous ones. I added a debug statement to the dumping code,
> and it gets called multiple times:
> {noformat}
> I0404 12:25:34.453413 6527 codegen-symbol-emitter.cc:58]
> 574df02d4b904ee9:9fa6181b00000001] Writing disassembly to:
> /data/Impala/logs/asm_module_dir/574df02d4b904ee9:9fa6181b00000000.asm
> I0404 12:25:34.463084 6528 codegen-symbol-emitter.cc:58]
> 574df02d4b904ee9:9fa6181b00000000] Writing disassembly to:
> /data/Impala/logs/asm_module_dir/574df02d4b904ee9:9fa6181b00000000.asm
> ...
> I0404 12:25:34.491320 6529 codegen-symbol-emitter.cc:58]
> 574df02d4b904ee9:9fa6181b00000004] Writing disassembly to:
> /data/Impala/logs/asm_module_dir/574df02d4b904ee9:9fa6181b00000000.asm{noformat}
> We should fix the filenames so that these collisions do not occur. One option
> would be to use the fragment id rather than the query id.
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