[jira] [Created] (SOLR-12487) Possible corruption in tlog after restart of Solr

["Lars Gjestang (JIRA)" <ji...@apache.org>]

Lars Gjestang created SOLR-12487:
------------------------------------

             Summary: Possible corruption in tlog after restart of Solr
                 Key: SOLR-12487
                 URL: https://issues.apache.org/jira/browse/SOLR-12487
             Project: Solr
          Issue Type: Bug
      Security Level: Public (Default Security Level. Issues are Public)
          Components: SolrCloud, update
    Affects Versions: 6.5.1
         Environment: Windows server 2012

12 CPU

96GB RAM

-DzkClientTimeout=45000-DzkRun
--Xms16g-Xmx16g-Xss256k
            Reporter: Lars Gjestang


After restarting Solr we encountered issues replaying tlogs from one of our six shards. The other shards were up and running after a couple hours of replay (due to total tlog of 20gb which we are going to change from "on request" to maxDocs/maxTime). 

The log first states warnings about "Unexpected log entry or corrupt log" and then we get the following error message:

 

java.util.concurrent.ExecutionException: org.apache.solr.common.SolrException: Unable to create core [VCloud_shard1_replica1]
 at java.util.concurrent.FutureTask.report(Unknown Source)
 at java.util.concurrent.FutureTask.get(Unknown Source)
 at org.apache.solr.core.CoreContainer.lambda$load$6(CoreContainer.java:581)
 at com.codahale.metrics.InstrumentedExecutorService$InstrumentedRunnable.run(InstrumentedExecutorService.java:176)
 at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source)
 at java.util.concurrent.FutureTask.run(Unknown Source)
 at org.apache.solr.common.util.ExecutorUtil$MDCAwareThreadPoolExecutor.lambda$execute$0(ExecutorUtil.java:229)
 at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
 at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
 at java.lang.Thread.run(Unknown Source)
Caused by: org.apache.solr.common.SolrException: Unable to create core [VCloud_shard1_replica1]
 at org.apache.solr.core.CoreContainer.create(CoreContainer.java:933)
 at org.apache.solr.core.CoreContainer.lambda$load$5(CoreContainer.java:553)
 at com.codahale.metrics.InstrumentedExecutorService$InstrumentedCallable.call(InstrumentedExecutorService.java:197)
 ... 5 more
Caused by: org.apache.solr.common.SolrException: Error Instantiating Update Handler, solr.DirectUpdateHandler2 failed to instantiate org.apache.solr.update.UpdateHandler
 at org.apache.solr.core.SolrCore.<init>(SolrCore.java:965)
 at org.apache.solr.core.SolrCore.<init>(SolrCore.java:831)
 at org.apache.solr.core.CoreContainer.create(CoreContainer.java:918)
 ... 7 more
Caused by: org.apache.solr.common.SolrException: Error Instantiating Update Handler, solr.DirectUpdateHandler2 failed to instantiate org.apache.solr.update.UpdateHandler
 at org.apache.solr.core.SolrCore.createInstance(SolrCore.java:775)
 at org.apache.solr.core.SolrCore.createUpdateHandler(SolrCore.java:823)
 at org.apache.solr.core.SolrCore.initUpdateHandler(SolrCore.java:1071)
 at org.apache.solr.core.SolrCore.<init>(SolrCore.java:936)
 ... 9 more
Caused by: java.lang.reflect.InvocationTargetException
 at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
 at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)
 at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
 at java.lang.reflect.Constructor.newInstance(Unknown Source)
 at org.apache.solr.core.SolrCore.createInstance(SolrCore.java:761)
 ... 12 more
Caused by: java.lang.StackOverflowError
 at org.apache.solr.common.util.JavaBinCodec.readVInt(JavaBinCodec.java:998)
 at org.apache.solr.common.util.JavaBinCodec.readMap(JavaBinCodec.java:612)
 at org.apache.solr.common.util.JavaBinCodec.readObject(JavaBinCodec.java:298)
etc......

...

After this happens it won't do any more work on this shard and the main page in solr displays:
"VCloud_shard1_replica1: org.apache.solr.common.SolrException:org.apache.solr.common.SolrException: Error Instantiating Update Handler, solr.DirectUpdateHandler2 failed to instantiate org.apache.solr.update.UpdateHandler"

 

Based on the execption and the huge repeating StackOverflowError we believe the tlog is corrupt and missing e.g. an end tag. 

 

 



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