[SOLR-10196] ElectionContext#runLeaderProcess can hit NPE on core close.

• Type: Bug
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Fix Version/s: 6.5, 7.0
• Assignee: Mark Miller
• Reporter: Mark Miller
• Created: 23/Feb/17 01:07
• Updated: 08/Jun/19 15:29
• Resolved: 28/Feb/17 16:18

Description

   [junit4]   2> 191445 INFO  (zkCallback-7-thread-7-processing-n:127.0.0.1:45055_) [n:127.0.0.1:45055_ c:solrj_collection2 s:shard2 r:core_node3 x:solrj_collection2_shard2_replica1] o.a.s.m.SolrMetricManager Closing metric reporters for: solr.core.solrj_collection2.shard2.replica1
   [junit4]   2> 191445 INFO  (zkCallback-7-thread-7-processing-n:127.0.0.1:45055_) [n:127.0.0.1:45055_ c:solrj_collection2 s:shard2 r:core_node3 x:solrj_collection2_shard2_replica1] o.a.s.s.h.HdfsDirectory Closing hdfs directory hdfs://localhost:34043/solr_hdfs_home/solrj_collection2/core_node3/data
   [junit4]   2> 191476 INFO  (zkCallback-7-thread-7-processing-n:127.0.0.1:45055_) [n:127.0.0.1:45055_ c:solrj_collection2 s:shard2 r:core_node3 x:solrj_collection2_shard2_replica1] o.a.s.s.h.HdfsDirectory Closing hdfs directory hdfs://localhost:34043/solr_hdfs_home/solrj_collection2/core_node3/data/index
   [junit4]   2> 191484 INFO  (zkCallback-7-thread-7-processing-n:127.0.0.1:45055_) [n:127.0.0.1:45055_ c:solrj_collection2 s:shard2 r:core_node3 x:solrj_collection2_shard2_replica1] o.a.s.s.h.HdfsDirectory Closing hdfs directory hdfs://localhost:34043/solr_hdfs_home/solrj_collection2/core_node3/data/snapshot_metadata
   [junit4]   2> 191523 INFO  (coreCloseExecutor-172-thread-6) [n:127.0.0.1:45055_ c:solrj_collection4 s:shard5 r:core_node4 x:solrj_collection4_shard5_replica1] o.a.s.m.SolrMetricManager Closing metric reporters for: solr.core.solrj_collection4.shard5.replica1
   [junit4]   2> 191530 INFO  (zkCallback-7-thread-9-processing-n:127.0.0.1:45055_) [n:127.0.0.1:45055_    ] o.a.s.c.c.ZkStateReader A cluster state change: [WatchedEvent state:SyncConnected type:NodeDataChanged path:/collections/solrj_collection2/state.json] for collection [solrj_collection2] has occurred - updating... (live nodes size: [1])
   [junit4]   2> 191554 INFO  (coreCloseExecutor-172-thread-6) [n:127.0.0.1:45055_ c:solrj_collection4 s:shard5 r:core_node4 x:solrj_collection4_shard5_replica1] o.a.s.s.h.HdfsDirectory Closing hdfs directory hdfs://localhost:34043/solr_hdfs_home/solrj_collection4/core_node4/data/index
   [junit4]   2> 191555 ERROR (zkCallback-7-thread-7-processing-n:127.0.0.1:45055_) [n:127.0.0.1:45055_ c:solrj_collection2 s:shard2 r:core_node3 x:solrj_collection2_shard2_replica1] o.a.s.c.ShardLeaderElectionContext There was a problem trying to register as the leader:java.lang.NullPointerException
   [junit4]   2> 	at org.apache.solr.cloud.ShardLeaderElectionContext.runLeaderProcess(ElectionContext.java:426)
   [junit4]   2> 	at org.apache.solr.cloud.LeaderElector.runIamLeaderProcess(LeaderElector.java:170)
   [junit4]   2> 	at org.apache.solr.cloud.LeaderElector.checkIfIamLeader(LeaderElector.java:135)
   [junit4]   2> 	at org.apache.solr.cloud.LeaderElector.access$200(LeaderElector.java:56)
   [junit4]   2> 	at org.apache.solr.cloud.LeaderElector$ElectionWatcher.process(LeaderElector.java:348)
   [junit4]   2> 	at org.apache.solr.common.cloud.SolrZkClient$3.lambda$process$0(SolrZkClient.java:268)
   [junit4]   2> 	at java.util.concurrent.Executors$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$0(ExecutorUtil.java:229)
   [junit4]   2> 	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
   [junit4]   2> 	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
   [junit4]   2> 	at java.lang.Thread.run(Thread.java:745)

Issue Links

• is related to: SOLR-10032 Create report to assess Solr test quality at a commit point.