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https://issues.apache.org/jira/browse/PHOENIX-7076?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Viraj Jasani resolved PHOENIX-7076.
-----------------------------------
Resolution: Fixed
> MetaDataRegionObserver#postOpen hook improvements
> -------------------------------------------------
>
> Key: PHOENIX-7076
> URL: https://issues.apache.org/jira/browse/PHOENIX-7076
> Project: Phoenix
> Issue Type: Bug
> Affects Versions: 5.1.3
> Reporter: Viraj Jasani
> Assignee: Divneet Kaur
> Priority: Major
> Fix For: 5.2.0, 5.1.4
>
>
> For older versions upgrading to 4.7+, we perform deletion of all rows on
> SYSTEM.STATS table one time. This is done only if column "UPGRADE_TO_4_7"
> does not exist on SYSTEM.CATALOG.
> Since this task is performed in a daemon thread as part of region#postOpen
> coproc hook, it might get stuck accessing SYSTEM.CATALOG table if the region
> open gets delayed for some reason.
> Similar to BuildIndexScheduleTask that gets scheduled with 10s of initial
> delay (by default), we should perform truncate stats as a delayed task, even
> though it does not require any repetition.
>
> {code:java}
> 2023-10-11 22:51:09,728 DEBUG [Thread-60] client.RpcRetryingCallerImpl -
> n$ClientServiceBlockingInterfaceWrapper.doCall(ServerConnectionUtils.java:163)
>
> at
> org.apache.hadoop.hbase.client.ServerConnectionUtils$ShortCircuitingClusterConnection$ClientServiceBlockingInterfaceWrapper.get(ServerConnectionUtils.java:131)
>
> at
> org.apache.hadoop.hbase.client.ClientServiceCallable.doGet(ClientServiceCallable.java:51)
>
> at org.apache.hadoop.hbase.client.HTable$1.rpcCall(HTable.java:364)
> at org.apache.hadoop.hbase.client.HTable$1.rpcCall(HTable.java:359)
> at
> org.apache.hadoop.hbase.client.RegionServerCallable.call(RegionServerCallable.java:124)
>
> at
> org.apache.hadoop.hbase.client.RpcRetryingCallerImpl.callWithRetries(RpcRetryingCallerImpl.java:104)
>
> at org.apache.hadoop.hbase.client.HTable.get(HTable.java:370)
> at org.apache.hadoop.hbase.client.HTable.get(HTable.java:343)
> at
> org.apache.phoenix.util.UpgradeUtil.truncateStats(UpgradeUtil.java:2057)
> at
> org.apache.phoenix.coprocessor.MetaDataRegionObserver$1$1.run(MetaDataRegionObserver.java:182)
>
> at
> org.apache.phoenix.coprocessor.MetaDataRegionObserver$1$1.run(MetaDataRegionObserver.java:179)
>
> at java.security.AccessController.doPrivileged(Native Method)
> at javax.security.auth.Subject.doAs(Subject.java:422)
> at
> org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1962)
>
> at
> org.apache.hadoop.security.SecurityUtil.doAsUser(SecurityUtil.java:514)
> at
> org.apache.hadoop.security.SecurityUtil.doAsLoginUser(SecurityUtil.java:495)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
> at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
>
> at java.lang.reflect.Method.invoke(Method.java:498)
> at org.apache.hadoop.hbase.util.Methods.call(Methods.java:39)
> at org.apache.hadoop.hbase.security.User.runAsLoginUser(User.java:178)
> at
> org.apache.phoenix.coprocessor.MetaDataRegionObserver$1.run(MetaDataRegionObserver.java:179)
>
> at java.lang.Thread.run(Thread.java:750) {code}
>
> Improvements:
> # Schedule truncate stats task with 10s delay (configurable) rather than
> starting the thread immediately.
> # Only if {{phoenix.stats.collection.enabled}} is enabled, create daemon
> thread for truncate stats task.
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