Alex Rudyy created QPID-8500:
--------------------------------
Summary: [Broker-J] Introduce a switch to disable coalescing
committer in BDB HA message store
Key: QPID-8500
URL: https://issues.apache.org/jira/browse/QPID-8500
Project: Qpid
Issue Type: Improvement
Components: Broker-J
Reporter: Alex Rudyy
Fix For: qpid-java-broker-8.0.4
A BDB JE replication Feeder fails sporadically with errors like the one below
{noformat}
Halted log file reading at file 0x7472c8 offset 0x199d07
offset(decimal)=1678599 prev=0x199cd5:
entry=DEL_LN_TXtype=31,version=14)
prev=0x199cd5
size=44
Next entry should be at 0x199d49
com.sleepycat.je.EnvironmentFailureException: (JE 7.4.5) want to read
52,431,066,320 but reader at 52,431,066,327 UNEXPECTED_STATE: Unexpected
internal state, may have side effects.
at
com.sleepycat.je.EnvironmentFailureException.unexpectedState(EnvironmentFailureException.java:428)
at
com.sleepycat.je.rep.stream.FeederReader.checkForPassingTarget(FeederReader.java:297)
at
com.sleepycat.je.rep.stream.FeederReader.isTargetEntry(FeederReader.java:317)
at
com.sleepycat.je.log.FileReader.readNextEntryAllowExceptions(FileReader.java:332)
at com.sleepycat.je.log.FileReader.readNextEntry(FileReader.java:245)
at
com.sleepycat.je.rep.stream.FeederReader.scanForwards(FeederReader.java:280)
at
com.sleepycat.je.rep.stream.MasterFeederSource.getWireRecord(MasterFeederSource.java:70)
at
com.sleepycat.je.rep.impl.node.Feeder$OutputThread.writeAvailableEntries(Feeder.java:1266)
at
com.sleepycat.je.rep.impl.node.Feeder$OutputThread.run(Feeder.java:1144)
{noformat}
The issue is caused by
Based on discussion at
[https://community.oracle.com/tech/developers/discussion/4300421/master-fails-unexpectedly-due-to-feeder-output-halted-log-file-reading-at-file-0x334f63-offset-0x8ce]
we need a way to configure broker without a coalescing committer. The local
sync policy would be set as per user virtual host settings.
A context variable can be added into BDB HA to disable coalescing committer
thread.
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