You are viewing a plain text version of this content. The canonical link for it is here.
Posted to notifications@accumulo.apache.org by "Josh Elser (JIRA)" <ji...@apache.org> on 2016/04/21 20:13:25 UTC
[jira] [Created] (ACCUMULO-4197) Intermittent failure of
HalfDeadTServerIT
Josh Elser created ACCUMULO-4197:
------------------------------------
Summary: Intermittent failure of HalfDeadTServerIT
Key: ACCUMULO-4197
URL: https://issues.apache.org/jira/browse/ACCUMULO-4197
Project: Accumulo
Issue Type: Bug
Components: test
Reporter: Josh Elser
Priority: Minor
Fix For: 1.6.6, 1.7.2, 1.8.0
I observed an intermittent failure of HalfDeadTServerIT#testRecover today.
This test "injects" pauses to the C read and write calls inside of tserver. testRecover injects a pause of 10 seconds to show that the TServer can reconnect to ZK (and not lose its session).
However, with an RPC timeout of 5 seconds, if a minor compaction is triggered, this pause will cause a compaction to take >10 seconds which will trigger the "hold timeout" causing an exception to be thrown to the client.
{noformat}
2016-04-20 03:39:26,999 [tserver.TabletServer$ThriftClientHandler] ERROR: Commits are held
org.apache.accumulo.tserver.HoldTimeoutException: Commits are held
at org.apache.accumulo.tserver.TabletServerResourceManager.waitUntilCommitsAreEnabled(TabletServerResourceManager.java:493)
at org.apache.accumulo.tserver.TabletServer$ThriftClientHandler.flush(TabletServer.java:805)
at org.apache.accumulo.tserver.TabletServer$ThriftClientHandler.closeUpdate(TabletServer.java:962)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.apache.accumulo.core.trace.wrappers.RpcServerInvocationHandler.invoke(RpcServerInvocationHandler.java:46)
at org.apache.accumulo.server.rpc.RpcWrapper$1.invoke(RpcWrapper.java:73)
at com.sun.proxy.$Proxy21.closeUpdate(Unknown Source)
at org.apache.accumulo.core.tabletserver.thrift.TabletClientService$Processor$closeUpdate.getResult(TabletClientService.java:2446)
at org.apache.accumulo.core.tabletserver.thrift.TabletClientService$Processor$closeUpdate.getResult(TabletClientService.java:2430)
at org.apache.thrift.ProcessFunction.process(ProcessFunction.java:39)
at org.apache.thrift.TBaseProcessor.process(TBaseProcessor.java:39)
at org.apache.accumulo.server.rpc.TimedProcessor.process(TimedProcessor.java:63)
at org.apache.thrift.server.AbstractNonblockingServer$FrameBuffer.invoke(AbstractNonblockingServer.java:516)
at org.apache.accumulo.server.rpc.CustomNonBlockingServer$1.run(CustomNonBlockingServer.java:78)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at org.apache.accumulo.fate.util.LoggingRunnable.run(LoggingRunnable.java:35)
at java.lang.Thread.run(Thread.java:745)
{noformat}
I believe this is intermittent based on whether or not a minor compaction is triggered after the i/o pausing is triggered or not. We could probably work around this by increasing the threshold for running a minor compaction.
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)