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From "Marcus Eriksson (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (CASSANDRA-8429) Some keys unreadable during compaction
Date Fri, 12 Dec 2014 17:32:14 GMT

     [ https://issues.apache.org/jira/browse/CASSANDRA-8429?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Marcus Eriksson updated CASSANDRA-8429:
---------------------------------------
    Summary: Some keys unreadable during compaction  (was: Stress on trunk fails mixed workload
on missing keys)

> Some keys unreadable during compaction
> --------------------------------------
>
>                 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
>             Fix For: 2.1.3
>
>         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
> 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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