[jira] [Commented] (CASSANDRA-10938) test_bulk_round_trip_blogposts is failing occasionally

["Stefania (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/CASSANDRA-10938?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15125905#comment-15125905 ] 

Stefania commented on CASSANDRA-10938:
--------------------------------------

I'm not surprised you couldn't reproduce with JFR enabled.

I've fixed the consistency level for {{test_bulk_round_trip_blogposts}} and I've hardened {{test_bulk_round_trip_blogposts_with_max_connections}} by increasing number of attempts and decreasing number of processes for COPY FROM. See commit [here|https://github.com/stef1927/cassandra-dtest/commit/d709b30290049fae37db91b1cc208590b10477f0]. 

I've run both tests 10 times on Linux and 10 times on Windows without failures. If you also cannot reproduce I agree with the proposal to commit and monitor on Jenkins.

Commit information:

* The [2.1 patch|https://github.com/stef1927/cassandra/commits/10938-2.1] is its own patch, the [2.2 patch|https://github.com/stef1927/cassandra/commits/10938-2.2] is identical to the 2.1 patch except for a conflict with the imports and it applies cleanly upwards.

* Pull request for test code is [here|https://github.com/riptano/cassandra-dtest/pull/776].

> test_bulk_round_trip_blogposts is failing occasionally
> ------------------------------------------------------
>
>                 Key: CASSANDRA-10938
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-10938
>             Project: Cassandra
>          Issue Type: Sub-task
>          Components: Tools
>            Reporter: Stefania
>            Assignee: Stefania
>             Fix For: 2.1.x, 2.2.x, 3.0.x, 3.x
>
>         Attachments: 6452.nps, 6452.png, 7300.nps, 7300a.png, 7300b.png, node1_debug.log, node2_debug.log, node3_debug.log, recording_127.0.0.1.jfr
>
>
> We get timeouts occasionally that cause the number of records to be incorrect:
> http://cassci.datastax.com/job/trunk_dtest/858/testReport/cqlsh_tests.cqlsh_copy_tests/CqlshCopyTest/test_bulk_round_trip_blogposts/



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