[jira] [Commented] (IMPALA-11572) TestHdfsScannerSkew.test_mt_dop_skew_lpt is flaky

["Daniel Becker (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/IMPALA-11572?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17641225#comment-17641225 ] 

Daniel Becker commented on IMPALA-11572:
----------------------------------------

I encountered it during testing for the new release:
{code:java}
query_test/test_scanners.py:438: in test_mt_dop_skew_lpt
    assert cnt_fail <= 5
E   assert 6 <= 5{code}
[https://jenkins.impala.io/job/ubuntu-16.04-dockerised-tests/6697/testReport/junit/query_test.test_scanners/TestHdfsScannerSkew/test_mt_dop_skew_lpt_protocol__beeswax___exec_option____test_replan___1___batch_size___0___num_nodes___0___disable_codegen_rows_threshold___0___disable_codegen___False___abort_on_error___1___exec_single_node_rows_threshold___0____table_format__text_none_/]

 

> TestHdfsScannerSkew.test_mt_dop_skew_lpt is flaky
> -------------------------------------------------
>
>                 Key: IMPALA-11572
>                 URL: https://issues.apache.org/jira/browse/IMPALA-11572
>             Project: IMPALA
>          Issue Type: Bug
>            Reporter: Zoltán Borók-Nagy
>            Assignee: Zoltán Borók-Nagy
>            Priority: Major
>              Labels: broken-build
>
> The test can fail with:
> {noformat}
> query_test/test_scanners.py:428: in test_mt_dop_skew_lpt
>     assert cnt_fail < 3
> E   assert 3 < 3
> {noformat}
> We need to fine-tune the test to deflake it.



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