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https://issues.apache.org/jira/browse/HBASE-22944?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16918323#comment-16918323
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Pankaj Kumar commented on HBASE-22944:
--------------------------------------
This is little tricky which will happen in below scenario,
# HM & RSs are restarted after enabling Space Quota feature.
# SpaceQuotaRefresher chore interval is set as very low say 5 sec
# So by the time HMaster creates quota table SpaceQuotaRefresherChore executes
and throws TNFE.
Right [~shardulsingh]?
> TableNotFoundException: hbase:quota is thrown when region server is
> restarted.
> -------------------------------------------------------------------------------
>
> Key: HBASE-22944
> URL: https://issues.apache.org/jira/browse/HBASE-22944
> Project: HBase
> Issue Type: Bug
> Components: Quotas
> Reporter: Shardul Singh
> Assignee: Shardul Singh
> Priority: Minor
>
> During Master startup if quota feature is enabled and region server is
> running TableNotFoundException occurs in regionServer logs
> SpaceQuotaRefresherChore does not checks whether hbase:quota table is
> present,before starting its operation which sometimes may result to
> TableNotFoundExceptions like below.
> This is because master has not created the hbase:quota table and
> SpaceQuotaRefresherChore is running.
> {code:java}
> java.io.UncheckedIOException: org.apache.hadoop.hbase.
> TableNotFoundException: hbase:quota
> at
> org.apache.hadoop.hbase.client.ResultScanner$1.hasNext(ResultScanner.java:55)
> at
> org.apache.hadoop.hbase.quotas.SpaceQuotaRefresherChore.fetchSnapshotsFromQuotaTable(SpaceQuotaRefresherChore.java:170)
> at
> org.apache.hadoop.hbase.quotas.SpaceQuotaRefresherChore.chore(SpaceQuotaRefresherChore.java:84)
> at org.apache.hadoop.hbase.ScheduledChore.run(ScheduledChore.java:186)
> at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
> at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308)
> at
> java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180)
> at
> java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294)
> at
> org.apache.hadoop.hbase.JitterScheduledThreadPoolExecutorImpl$JitteredRunnableScheduledFuture.run(JitterScheduledThreadPoolExecutorImpl.java:111)
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
> at java.lang.Thread.run(Thread.java:748)
> {code}
>
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