[ https://issues.apache.org/jira/browse/HBASE-16874?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Ted Yu updated HBASE-16874: --------------------------- Status: Patch Available (was: Open) > Potential NPE from ProcedureExecutor#stop() > ------------------------------------------- > > Key: HBASE-16874 > URL: https://issues.apache.org/jira/browse/HBASE-16874 > Project: HBase > Issue Type: Bug > Reporter: Ted Yu > Assignee: Matteo Bertozzi > Priority: Minor > Attachments: 16874.v1.txt > > > When examining failed test : > https://builds.apache.org/job/HBase-TRUNK_matrix/lastCompletedBuild/jdk=JDK%201.8%20(latest),label=yahoo-not-h2/testReport/org.apache.hadoop.hbase.master.procedure/TestMasterFailoverWithProcedures/org_apache_hadoop_hbase_master_procedure_TestMasterFailoverWithProcedures/ > I noticed the following: > {code} > 2016-10-18 18:47:39,313 INFO [Time-limited test] > procedure.TestMasterFailoverWithProcedures(306): Restart 2 exec state: > TRUNCATE_TABLE_CLEAR_FS_LAYOUT > Exception in thread "ProcedureExecutorWorker-1" java.lang.NullPointerException > at > org.apache.hadoop.hbase.procedure2.ProcedureExecutor.stop(ProcedureExecutor.java:533) > at > org.apache.hadoop.hbase.procedure2.ProcedureExecutor.execProcedure(ProcedureExecutor.java:1197) > at > org.apache.hadoop.hbase.procedure2.ProcedureExecutor.executeProcedure(ProcedureExecutor.java:959) > at > org.apache.hadoop.hbase.procedure2.ProcedureExecutor.access$700(ProcedureExecutor.java:73) > at > org.apache.hadoop.hbase.procedure2.ProcedureExecutor$WorkerThread.run(ProcedureExecutor.java:1405) > {code} > This seems to be the result of race between stop() and join() methods. -- This message was sent by Atlassian JIRA (v6.3.4#6332)