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https://issues.apache.org/jira/browse/CASSANDRA-16444?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17292834#comment-17292834
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Benjamin Lerer edited comment on CASSANDRA-16444 at 3/2/21, 4:05 PM:
---------------------------------------------------------------------
Thanks for the patches and the deep analysis.
* I believe that even if it does not appear as a problem right now we should
make the tests more robusts. 2 things that strike me are that the tables are
not cleaned up between the tests and that {{forcedFlushes}} are used but the
tests do not disable the automatic flushes.
I would change the {{cleanupData}} method into:
{code}
private static void cleanupData()
{
stores().forEach(ColumnFamilyStore::truncateBlocking);
}
private static Stream<ColumnFamilyStore> stores()
{
Keyspace ks = Keyspace.open(KS_NAME);
return ks.getMetadata().tables.stream().map(t ->
ks.getColumnFamilyStore(t.name));
}
{code}
and the {{cleanUp}} method into:
{code}
@Before
public void cleanUp()
{
cleanupData();
}
{code}
That would ensure that we clean all the tables between the different tests.
I would also add
{{stores().forEach(ColumnFamilyStore::disableAutoCompaction);}} at the end of
the {{loadSchema()}} method to ensure that there are no race condition with
automatic compactions.
* Regarding the timestamp fix, would it not make sense to use some thing like:
{code}
private static long timestamp = 0;
private static long nextTimestamp()
{
timestamp += 1000;
return timestamp;
}
{code}
rather than specifying the timestamp for each call to {{loadData}}?
* Regarding {{testInsertingIncorrectValuesIntoAgeIndex}} problem in 3.11, it
seems that the test has been changed as part of CASSANDRA-15867 and I am not
convinced that this change was the correct one. If you roll back that change,
do you still see the same issue?
was (Author: blerer):
Thanks for the patches and the deep analysis.
* I believe that even if it does not appear as a problem right now we should
make the tests more robusts. 2 things that strike me are that the tables are
not cleaned up between the tests and that {{forcedFlushes}} are used but the
tests do not disable the automatic flushes.
I would change the {{cleanupData}} method into:
{code}
private static void cleanupData()
{
stores().forEach(ColumnFamilyStore::truncateBlocking);
}
private static Stream<ColumnFamilyStore> stores()
{
Keyspace ks = Keyspace.open(KS_NAME);
return ks.getMetadata().tables.stream().map(t ->
ks.getColumnFamilyStore(t.name));
}
{code}
and the {{cleanUp}} method into:
{code}
@Before
public void cleanUp()
{
cleanupData();
}
{code}
That would ensure that we clean all the tables between the different tests.
I would also add
{{stores().forEach(ColumnFamilyStore::disableAutoCompaction);}} at the end of
the {{loadSchema()}} method to ensure that there are no race condition with
automatic compactions.
* Regarding the timestamp fix, would it not make sense to use some thing like:
{code}
private static long timestamp = 0;
private static long nextTimestamp()
{
timestamp += 1000;
return timestamp;
}
{code}
rather than specifying the timestamp for each call to {{loadData}}?
* Regarding {{testIndexMemtableSwitching}} problem in 3.11, it seems that the
test has been changed as part of CASSANDRA-15867 and I am not convinced that
this change was the correct one. If you roll back that change, do you still see
the same issue?
> Fix flaky test testMultiExpressionQueriesWhereRowSplitBetweenSSTables -
> org.apache.cassandra.index.sasi.SASIIndexTest
> ---------------------------------------------------------------------------------------------------------------------
>
> Key: CASSANDRA-16444
> URL: https://issues.apache.org/jira/browse/CASSANDRA-16444
> Project: Cassandra
> Issue Type: Bug
> Components: Test/unit
> Reporter: David Capwell
> Assignee: Alexandre Dutra
> Priority: Normal
> Fix For: 4.0-beta
>
>
> https://app.circleci.com/pipelines/github/dcapwell/cassandra/862/workflows/d2b10373-5bd1-4895-a738-1c28587cae62/jobs/5136
> {code}
> junit.framework.AssertionFailedError: []
> at
> org.apache.cassandra.index.sasi.SASIIndexTest.testMultiExpressionQueriesWhereRowSplitBetweenSSTables(SASIIndexTest.java:589)
> at
> org.apache.cassandra.index.sasi.SASIIndexTest.testMultiExpressionQueriesWhereRowSplitBetweenSSTables(SASIIndexTest.java:468)
> {code}
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