Cache Query Hang When Using Write-Behind (Doc ID 1334360.1)

Last updated on MARCH 08, 2017

Applies to:

Oracle Coherence - Version: 3.6.1 and later   [Release: AS10g and later ]
Information in this document applies to any platform.

Symptoms

The following sequence of actions leads to the problem

1. In an Invocable, add new entries to cache(write-behind)
2. Wait for a few seconds to let the entries in write-behind queue get flushed.
3. Run query against the cache and it will get stuck for some time. A response after about ~ 212084 milliseconds had been observed instead of ~ 20 milliseconds.

The stuck thread:

java.lang.Thread.yield(Native Method)
com.tangosol.coherence.component.util.daemon.queueProcessor.service.grid.partitionedService.PartitionedCache$Storage.reevaluateQueryResults(PartitionedCache
.CDB:33)
com.tangosol.coherence.component.util.daemon.queueProcessor.service.grid.partitionedService.PartitionedCache$Storage.checkIndexConsistency(PartitionedCache.
CDB:52)
com.tangosol.coherence.component.util.daemon.queueProcessor.service.grid.partitionedService.PartitionedCache$Storage.createQueryResult(PartitionedCache.CDB:
94)
com.tangosol.coherence.component.util.daemon.queueProcessor.service.grid.partitionedService.PartitionedCache$Storage.query(PartitionedCache.CDB:72)
com.tangosol.coherence.component.util.daemon.queueProcessor.service.grid.partitionedService.PartitionedCache.onQueryRequest(PartitionedCache.CDB:19)
com.tangosol.coherence.component.util.daemon.queueProcessor.service.grid.partitionedService.PartitionedCache$QueryRequest.run(PartitionedCache.CDB:1)
com.tangosol.coherence.component.util.DaemonPool$WrapperTask.run(DaemonPool.CDB:1)
com.tangosol.coherence.component.util.DaemonPool$WrapperTask.run(DaemonPool.CDB:32)
com.tangosol.coherence.component.util.DaemonPool$Daemon.onNotify(DaemonPool.CDB:63)
com.tangosol.coherence.component.util.Daemon.run(Daemon.CDB:42)
java.lang.Thread.run(Unknown Source)

Cause

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