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https://issues.apache.org/jira/browse/IMPALA-9999?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17607279#comment-17607279
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ASF subversion and git services commented on IMPALA-9999:
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Commit cff286e7512e9d1e2ff2b4ea033d3e575f54b353 in impala's branch
refs/heads/master from Joe McDonnell
[ https://gitbox.apache.org/repos/asf?p=impala.git;h=cff286e75 ]
IMPALA-9999: Switch to GCC 10.4
This upgrades GCC and libstdc++ to version 10.4. This
required patching or upgrading several dependencies
so they could compile with GCC 10. The toolchain
companion change has details on what items needed
to be upgraded and why.
The toolchain companion change switches GCC to build
with toolchain binutils rather than host binutils. This
means that the python virtualenv initialization needs
to include binutils on the path.
This disables two warnings introduced in the new GCC
versions (Wclass-memaccess and Winit-list-lifetime).
These two warnings occur in our code and also in
dependencies like LLVM and rapidjson. These are not
critical warnings, so they can be addressed
independently and reenabled later.
Binary sizes increase, particulary when including
debug symbols:
| GCC 7.5 | GCC 10.4
impalad RELEASE stripped | 83204768 | 88702824
impalad RELEASE | 707278904 | 971711456
impalad DEBUG stripped | 106677672 | 97391944
impalad DEBUG | 725864760 | 867647512
Testing:
- Multiple test jobs (core, release exhaustive, ASAN)
- Performance testing for TPC-H and TPC-DS shows
a modest improvement (2-4%).
- Code compiles without warnings on debug and release
Change-Id: Ibe6857b822925226d39fd4d6413457ef6bbaabec
Reviewed-on: http://gerrit.cloudera.org:8080/18134
Reviewed-by: Michael Smith <[email protected]>
Tested-by: Impala Public Jenkins <[email protected]>
Reviewed-by: Csaba Ringhofer <[email protected]>
> Update Impala to use GCC 9 or higher
> ------------------------------------
>
> Key: IMPALA-9999
> URL: https://issues.apache.org/jira/browse/IMPALA-9999
> Project: IMPALA
> Issue Type: Improvement
> Components: Backend, Infrastructure
> Affects Versions: Impala 4.0.0
> Reporter: Joe McDonnell
> Assignee: Joe McDonnell
> Priority: Major
> Attachments: perf-AB-test-321-result.txt, perf-AB-test-322-result.txt
>
>
> Impala recently updated to use GCC 7.5. This got past the major ABI changes,
> so it makes sense to keep going and update to even more recent versions of
> GCC. This tracks the tasks necessary to switch to GCC 9.2 or above (which is
> already available in the toolchain).
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