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https://issues.apache.org/jira/browse/CASSANDRA-12668?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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sankalp kohli updated CASSANDRA-12668:
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Reproduced In: 2.1.15
> Memtable Contention in 2.1
> --------------------------
>
> Key: CASSANDRA-12668
> URL: https://issues.apache.org/jira/browse/CASSANDRA-12668
> Project: Cassandra
> Issue Type: Bug
> Reporter: sankalp kohli
>
> We added a new Btree implementation in 2.1 which causes write performance to
> go down in Cassandra if there is lot of contention in the memtable for a CQL
> partition. Upgrading a cluster from 2.0 to 2.1 with contention causes the
> cluster to fall apart due to GC. We tried making the defaults added in
> CASSANDRA-7546 configurable but that did not help. Is there anyway to fix
> this issue?
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