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https://issues.apache.org/jira/browse/HBASE-19756?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16671404#comment-16671404
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Bo Cui edited comment on HBASE-19756 at 11/1/18 10:13 AM:
----------------------------------------------------------
a phenomenon we encountered，when we create a table and restart the cluster, we
find that the number of files under /hbase/MasterProcedureWALs has not
decreased.
the reason is that CreateTableProc is persisted in ProcWAL, and its nonceKey is
not null
so,oldLog will not be deleted
[~thiruvel]
was (Author: bo cui):
a phenomenon we encountered，when we create a table and restart the cluster, we
find that the number of files under /hbase/MasterProcedureWALs has not
decreased.
the reason is that CreateTableProc is persisted in ProcWAL, and its nonceKey is
not null
so,oldLog will not be deleted
> Master NPE during completed failed proc eviction
> ------------------------------------------------
>
> Key: HBASE-19756
> URL: https://issues.apache.org/jira/browse/HBASE-19756
> Project: HBase
> Issue Type: Bug
> Affects Versions: 1.4.0, 1.3.1
> Reporter: Thiruvel Thirumoolan
> Assignee: Thiruvel Thirumoolan
> Priority: Major
> Fix For: 1.3.2, 1.4.1, 1.5.0, 2.0.0
>
> Attachments: HBASE-19756.branch-1.4.001.patch,
> HBASE-19756.branch-1.4.002.patch, HBASE-19756.branch-1.4.003.patch,
> HBASE-19756.master.001.patch
>
>
> When procedures like Create table fails due to say AccessDeniedException,
> then a rollback procedure is created. When the rollback is being cleaned up,
> it results in an NPE because those nonce procs aren't persisted
> Stack trace when this happens:
> {noformat}
> java.lang.NullPointerException
> at
> org.apache.hadoop.hbase.procedure2.store.ProcedureStoreTracker.delete(ProcedureStoreTracker.java:385)
> at
> org.apache.hadoop.hbase.procedure2.store.wal.WALProcedureStore.updateStoreTracker(WALProcedureStore.java:547)
> at
> org.apache.hadoop.hbase.procedure2.store.wal.WALProcedureStore.pushData(WALProcedureStore.java:504)
> at
> org.apache.hadoop.hbase.procedure2.store.wal.WALProcedureStore.delete(WALProcedureStore.java:453)
> at
> org.apache.hadoop.hbase.procedure2.ProcedureExecutor$CompletedProcedureCleaner.periodicExecute(ProcedureExecutor.java:184)
> at
> org.apache.hadoop.hbase.procedure2.ProcedureExecutor.timeoutLoop(ProcedureExecutor.java:995)
> at
> org.apache.hadoop.hbase.procedure2.ProcedureExecutor.access$500(ProcedureExecutor.java:78)
> at
> org.apache.hadoop.hbase.procedure2.ProcedureExecutor$3.run(ProcedureExecutor.java:507)
> {noformat}
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