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Posted to issues-all@impala.apache.org by "ASF subversion and git services (Jira)" <ji...@apache.org> on 2021/04/26 15:47:01 UTC
[jira] [Commented] (IMPALA-9856) Enable result spooling by default
[ https://issues.apache.org/jira/browse/IMPALA-9856?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17332528#comment-17332528 ]
ASF subversion and git services commented on IMPALA-9856:
---------------------------------------------------------
Commit 8b46d00f641abdb89d3d22de5c9a5d7044075893 in impala's branch refs/heads/master from Riza Suminto
[ https://gitbox.apache.org/repos/asf?p=impala.git;h=8b46d00 ]
IMPALA-10611: Fix flakiness in test_wide_row
test_wide_row has been intermittently failed with "Failed to allocate
row batch" error message. This is due to recent change in IMPALA-9856
that add query option max_row_size=10MB without raising the mem_limit.
This patch fix the flakiness by increasing the mem_limit from 100 MB to
132 MB to account for 32 MB reservation needed by BufferedPlanRootSink.
Testing:
- Loop the test in local dev machine.
Change-Id: Ie1f0b7d4d6b3a875d9b408f057d46fdbdbdf2a34
Reviewed-on: http://gerrit.cloudera.org:8080/17324
Reviewed-by: Impala Public Jenkins <im...@cloudera.com>
Tested-by: Impala Public Jenkins <im...@cloudera.com>
> Enable result spooling by default
> ---------------------------------
>
> Key: IMPALA-9856
> URL: https://issues.apache.org/jira/browse/IMPALA-9856
> Project: IMPALA
> Issue Type: Task
> Components: Backend
> Reporter: Sahil Takiar
> Assignee: Riza Suminto
> Priority: Major
> Fix For: Impala 4.0
>
>
> Result spooling has been relatively stable since it was introduced, and it has several benefits described in IMPALA-8656. It would be good to enable it by default.
> I looked into doing this a while ago, and there are a bunch of tests that rely on the "fetch one row batch at a time" behavior. Those tests fail when result spooling is enabled.
> The remaining linked tasks in IMPALA-8656 should be completed as well before enabling result spooling by default.
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