Andrzej Bialecki  created SOLR-12788:
----------------------------------------

             Summary: RecoveryStrategy throws IndexOutOfBoundsException
                 Key: SOLR-12788
                 URL: https://issues.apache.org/jira/browse/SOLR-12788
             Project: Solr
          Issue Type: Bug
      Security Level: Public (Default Security Level. Issues are Public)
    Affects Versions: master (8.0)
            Reporter: Andrzej Bialecki 


I spotted this when trying to reproduce a test failure:
{code}
   [junit4]   2> 32176 ERROR 
(recoveryExecutor-132-thread-1-processing-n:127.0.0.1:53696_i 
x:collection1_shard4_replica_n93 c:collection1 s:shard4 r:core_node94) 
[n:127.0.0.1:53696_i c:collection1 s:shard4 r:core_node94 
x:collection1_shard4_replica_n93] o.a.s.c.RecoveryStrategy Error getting recent 
versions.:java.lang.IndexOutOfBoundsException: Index: 0, Size: 0
   [junit4]   2>        at java.util.ArrayList.rangeCheck(ArrayList.java:653)
   [junit4]   2>        at java.util.ArrayList.get(ArrayList.java:429)
   [junit4]   2>        at 
org.apache.solr.cloud.RecoveryStrategy.doSyncOrReplicateRecovery(RecoveryStrategy.java:491)
   [junit4]   2>        at 
org.apache.solr.cloud.RecoveryStrategy.doRecovery(RecoveryStrategy.java:310)
   [junit4]   2>        at 
org.apache.solr.cloud.RecoveryStrategy.run(RecoveryStrategy.java:294)
   [junit4]   2>        at 
com.codahale.metrics.InstrumentedExecutorService$InstrumentedRunnable.run(InstrumentedExecutorService.java:176)
   [junit4]   2>        at 
java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
   [junit4]   2>        at 
java.util.concurrent.FutureTask.run(FutureTask.java:266)
   [junit4]   2>        at 
org.apache.solr.common.util.ExecutorUtil$MDCAwareThreadPoolExecutor.lambda$execute$0(ExecutorUtil.java:209)
   [junit4]   2>        at 
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
   [junit4]   2>        at 
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
   [junit4]   2>        at java.lang.Thread.run(Thread.java:745)
{code}

This is reproduces consistently with the following command:
{code}
ant test  -Dtestcase=ShardRoutingTest -Dtests.method=test 
-Dtests.seed=FF7B7D65A8936A3D -Dtests.slow=true -Dtests.badapples=true 
-Dtests.locale=ar-BH -Dtests.timezone=Indian/Mahe -Dtests.asserts=true 
-Dtests.file.encoding=US-ASCII
{code}



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