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https://issues.apache.org/jira/browse/CASSANDRA-8429?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14238459#comment-14238459
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Marcus Eriksson commented on CASSANDRA-8429:
--------------------------------------------
so, SSTW.openEarly() does not actually make all keys written to the writer
available for reading, instead it finds the last key that is actually readable
and sets that as SSTablereader.last, which was fine until CASSANDRA-8124
because we made actual files of the results before the compaction was done. We
still only move starts to reader.last, but since we do that several times we
create gaps in the range, making some keys unreadable until the compaction is
done.
We need to properly close the early opened file, but still keep it as a -tmp
file
> Stress on trunk fails mixed workload on missing keys
> ----------------------------------------------------
>
> Key: CASSANDRA-8429
> URL: https://issues.apache.org/jira/browse/CASSANDRA-8429
> Project: Cassandra
> Issue Type: Bug
> Environment: Ubuntu 14.04
> Reporter: Ariel Weisberg
> Assignee: Marcus Eriksson
> Attachments: cluster.conf, run_stress.sh
>
>
> Starts as part of merge commit 25be46497a8df46f05ffa102bc645bfd684ea48a
> Stress will say that a key wasn't validated because it isn't returned even
> though it's loaded. The key will eventually appear and can be queried using
> cqlsh.
> Reproduce with
> #!/bin/sh
> rm /tmp/fark
> ROWCOUNT=10000000
> SCHEMA='-col n=fixed(1) -schema
> compaction(strategy=LeveledCompactionStrategy) compression=LZ4Compressor'
> ./cassandra-stress write n=$ROWCOUNT -node xh61 -pop seq=1..$ROWCOUNT no-wrap
> -rate threads=25 $SCHEMA
> ./cassandra-stress mixed "ratio(read=2)" n=100000000 -node xh61 -pop
> "dist=extreme(1..$ROWCOUNT,0.6)" -rate threads=25 $SCHEMA
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