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https://issues.apache.org/jira/browse/CASSANDRA-2427?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13047836#comment-13047836
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Hudson commented on CASSANDRA-2427:
-----------------------------------
Integrated in Cassandra #921 (See
[https://builds.apache.org/job/Cassandra/921/])
r/m memtable_flush_after_mins
patch by Patricio Echague; reviewed by jbellis for CASSANDRA-2427
jbellis :
http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1134504
Files :
*
/cassandra/trunk/interface/thrift/gen-java/org/apache/cassandra/thrift/CounterSuperColumn.java
*
/cassandra/trunk/interface/thrift/gen-java/org/apache/cassandra/thrift/KeyCount.java
* /cassandra/trunk/src/java/org/apache/cassandra/db/Table.java
*
/cassandra/trunk/interface/thrift/gen-java/org/apache/cassandra/thrift/CfDef.java
*
/cassandra/trunk/interface/thrift/gen-java/org/apache/cassandra/thrift/NotFoundException.java
*
/cassandra/trunk/interface/thrift/gen-java/org/apache/cassandra/thrift/SliceRange.java
*
/cassandra/trunk/interface/thrift/gen-java/org/apache/cassandra/thrift/KsDef.java
* /cassandra/trunk/src/java/org/apache/cassandra/db/ColumnFamilyStore.java
*
/cassandra/trunk/interface/thrift/gen-java/org/apache/cassandra/thrift/CqlResult.java
*
/cassandra/trunk/interface/thrift/gen-java/org/apache/cassandra/thrift/SlicePredicate.java
*
/cassandra/trunk/interface/thrift/gen-java/org/apache/cassandra/thrift/ColumnOrSuperColumn.java
*
/cassandra/trunk/interface/thrift/gen-java/org/apache/cassandra/thrift/AuthenticationRequest.java
*
/cassandra/trunk/interface/thrift/gen-java/org/apache/cassandra/thrift/AuthenticationException.java
* /cassandra/trunk/src/java/org/apache/cassandra/thrift/ThriftValidation.java
* /cassandra/trunk/src/java/org/apache/cassandra/db/ColumnFamilyStoreMBean.java
*
/cassandra/trunk/interface/thrift/gen-java/org/apache/cassandra/thrift/ColumnParent.java
*
/cassandra/trunk/interface/thrift/gen-java/org/apache/cassandra/thrift/SchemaDisagreementException.java
*
/cassandra/trunk/interface/thrift/gen-java/org/apache/cassandra/thrift/KeyRange.java
*
/cassandra/trunk/interface/thrift/gen-java/org/apache/cassandra/thrift/SuperColumn.java
* /cassandra/trunk/test/unit/org/apache/cassandra/db/DefsTest.java
*
/cassandra/trunk/interface/thrift/gen-java/org/apache/cassandra/thrift/Column.java
*
/cassandra/trunk/interface/thrift/gen-java/org/apache/cassandra/thrift/AuthorizationException.java
*
/cassandra/trunk/interface/thrift/gen-java/org/apache/cassandra/thrift/IndexExpression.java
* /cassandra/trunk/src/java/org/apache/cassandra/cli/CliClient.java
*
/cassandra/trunk/interface/thrift/gen-java/org/apache/cassandra/thrift/Cassandra.java
*
/cassandra/trunk/interface/thrift/gen-java/org/apache/cassandra/thrift/KeySlice.java
* /cassandra/trunk/src/java/org/apache/cassandra/config/DatabaseDescriptor.java
* /cassandra/trunk/conf/cassandra.yaml
*
/cassandra/trunk/interface/thrift/gen-java/org/apache/cassandra/thrift/Deletion.java
*
/cassandra/trunk/interface/thrift/gen-java/org/apache/cassandra/thrift/IndexClause.java
*
/cassandra/trunk/interface/thrift/gen-java/org/apache/cassandra/thrift/Mutation.java
* /cassandra/trunk/src/avro/internode.genavro
*
/cassandra/trunk/interface/thrift/gen-java/org/apache/cassandra/thrift/TimedOutException.java
* /cassandra/trunk/src/java/org/apache/cassandra/db/Memtable.java
*
/cassandra/trunk/interface/thrift/gen-java/org/apache/cassandra/thrift/TokenRange.java
*
/cassandra/trunk/interface/thrift/gen-java/org/apache/cassandra/thrift/InvalidRequestException.java
*
/cassandra/trunk/src/java/org/apache/cassandra/cql/CreateColumnFamilyStatement.java
*
/cassandra/trunk/interface/thrift/gen-java/org/apache/cassandra/thrift/UnavailableException.java
*
/cassandra/trunk/interface/thrift/gen-java/org/apache/cassandra/thrift/CounterColumn.java
* /cassandra/trunk/src/resources/org/apache/cassandra/cli/CliHelp.yaml
*
/cassandra/trunk/interface/thrift/gen-java/org/apache/cassandra/thrift/CqlRow.java
*
/cassandra/trunk/interface/thrift/gen-java/org/apache/cassandra/thrift/ColumnDef.java
*
/cassandra/trunk/interface/thrift/gen-java/org/apache/cassandra/thrift/ColumnPath.java
* /cassandra/trunk/src/java/org/apache/cassandra/config/CFMetaData.java
> Heuristic or hard cap to prevent fragmented commit logs from bringing down
> the server
> -------------------------------------------------------------------------------------
>
> Key: CASSANDRA-2427
> URL: https://issues.apache.org/jira/browse/CASSANDRA-2427
> Project: Cassandra
> Issue Type: Improvement
> Reporter: Benjamin Coverston
> Assignee: Patricio Echague
> Labels: commitlog, hardening
> Fix For: 1.0
>
> Attachments: CASSANDRA-2427-trunk.txt
>
>
> Widely divergent write rates on column families can cause the commit log
> segments to fragment. In some cases we have seen the commit log partition
> overrun.
> One solution here would be to create a heuristic for segment fragmentation to
> trigger a flush (commit log segments/memtable) or simply track the free disk
> space and force a global flush when the disk gets to 80% capacity.
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