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https://issues.apache.org/jira/browse/CASSANDRA-13366?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15937989#comment-15937989
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Sylvain Lebresne commented on CASSANDRA-13366:
----------------------------------------------
Committed thanks (I'm still keeping the "write a dtest" on my TODO list, but it
may took me a few days to get to it and I don't see the point delaying the
commit given this is pretty simple one).
bq. because it is unreliable in the presence of range tombstones and compact
tables
Correct, it was unused and unsafe, so felt safer to just get rid of it.
> Possible AssertionError in UnfilteredRowIteratorWithLowerBound
> --------------------------------------------------------------
>
> Key: CASSANDRA-13366
> URL: https://issues.apache.org/jira/browse/CASSANDRA-13366
> Project: Cassandra
> Issue Type: Bug
> Reporter: Sylvain Lebresne
> Assignee: Sylvain Lebresne
> Fix For: 3.11.0
>
>
> In the code introduced by CASSANDRA-8180, we build a lower bound for a
> partition (sometimes) based on the min clustering values of the stats file.
> We can't do that if the sstable has and range tombston marker and the code
> does check that this is the case, but unfortunately the check is done using
> the stats {{minLocalDeletionTime}} but that value isn't populated properly in
> pre-3.0. This means that if you upgrade from 2.1/2.2 to 3.4+, you may end up
> getting an exception like
> {noformat}
> WARN [ReadStage-2] 2017-03-20 13:29:39,165
> AbstractLocalAwareExecutorService.java:167 - Uncaught exception on thread
> Thread[ReadStage-2,5,main]: {}
> java.lang.AssertionError: Lower bound [INCL_START_BOUND(Foo,
> -9223372036854775808, -9223372036854775808) ]is bigger than first returned
> value [Marker INCL_START_BOUND(Foo)@1490013810540999] for sstable
> /var/lib/cassandra/data/system/size_estimates-618f817b005f3678b8a453f3930b8e86/system-size_estimates-ka-1-Data.db
> at
> org.apache.cassandra.db.rows.UnfilteredRowIteratorWithLowerBound.computeNext(UnfilteredRowIteratorWithLowerBound.java:122)
> {noformat}
> and this until the sstable is upgraded.
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