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https://issues.apache.org/jira/browse/CASSANDRA-7245?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14018428#comment-14018428
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T Jake Luciani commented on CASSANDRA-7245:
-------------------------------------------
bq. In SP.mutate() you can't release the mutations until after we get the all
clear from the replicas, as we may have to use the mutations to write local
hints.
MS.addCallback also retains the mutation, this will be released by either the
timeoutReporter, or in the ResponseVerbHander
You are right on the other two points, I got rid of the ThreadLocal and moved
the frame to QueryState only. and I fixed the DroppableRunnable so release
always gets called. Attached as v5
> Out-of-Order keys with stress + CQL3
> ------------------------------------
>
> Key: CASSANDRA-7245
> URL: https://issues.apache.org/jira/browse/CASSANDRA-7245
> Project: Cassandra
> Issue Type: Bug
> Components: Core
> Reporter: Pavel Yaskevich
> Assignee: T Jake Luciani
> Fix For: 2.1.0
>
> Attachments: 7245-v2.txt, 7245.txt, 7245v3-rebase.txt, 7245v3.txt,
> 7245v4.txt, netty-all-4.0.19.Final.jar
>
>
> We have been generating data (stress with CQL3 prepared) for CASSANDRA-4718
> and found following problem almost in every SSTable generated (~200 GB of
> data and 821 SSTables).
> We set up they keys to be 10 bytes in size (default) and population between 1
> and 600000000.
> Once I ran 'sstablekeys' on the generated SSTable files I got following
> exceptions:
> _There is a problem with sorting of normal looking keys:_
> 30303039443538353645
> 30303039443745364242
> java.io.IOException: Key out of order! DecoratedKey(-217680888487824985,
> *30303039443745364242*) > DecoratedKey(-1767746583617597213,
> *30303039443437454333*)
> 00000a30303033343933
> 37344400001388343933
> java.io.IOException: Key out of order! DecoratedKey(5440473860101999581,
> *37344400001388343933*) > DecoratedKey(-7565486415339257200,
> *30303033344639443137*)
> 30303033354244363031
> 30303033354133423742
> java.io.IOException: Key out of order! DecoratedKey(2687072396429900180,
> *30303033354133423742*) > DecoratedKey(-7838239767410066684,
> *30303033354145344534*)
> 30303034313442354137
> 30343136353633340000
> java.io.IOException: Key out of order! DecoratedKey(1516003874415400462,
> *30343136353633340000*) > DecoratedKey(-9106177395653818217,
> *30303034313333444238*)
> 30303035373044373435
> 30303035373044334631
> java.io.IOException: Key out of order! DecoratedKey(-3645715702154616540,
> *30303035373044334631*) > DecoratedKey(-4296696226469000945,
> *30303035373132364138*)
> _And completely different ones:_
> 30303041333745373543
> 7cd045c59a90d7587d8d
> java.io.IOException: Key out of order! DecoratedKey(-3595402345023230196,
> *7cd045c59a90d7587d8d*) > DecoratedKey(-5146766422778260690,
> *30303041333943303232*)
> 30303033323144444144
> 30303033323346343932
> java.io.IOException: Key out of order! DecoratedKey(7071845511166615635,
> *30303033323346343932*) > DecoratedKey(5233296131921119414,
> *53d83e00000012287e03*)
> 30303034314531374431
> 3806734b256c27e41ec2
> java.io.IOException: Key out of order! DecoratedKey(-7720474642702543193,
> *3806734b256c27e41ec2*) > DecoratedKey(-8072288379146044663,
> *30303034314136413343*)
> _And sometimes there is no problem at all:_
> 30303033353144463637
> 0000002a31b3b31a1c2f
> 5d616dd38211ebb5d6ec
> 44423645000013880000
> 00001388138844463744
> 30303033353143394343
> It's worth to mention that we have got 22 timeout exceptions but number of
> out-of-order keys is much larger than that.
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