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https://issues.apache.org/jira/browse/PHOENIX-2977?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15323138#comment-15323138
 ] 

Ankit Singhal commented on PHOENIX-2977:
----------------------------------------

Sorry [~mujtabachohan] for trouble.
But I already fixed this too in PHOENIX-2901, as namespaceMappingEnabled cell 
was added with old timestamp during upgrade code but STATS and SEQUENCE tables 
are created with higher timestamp having value as false.

I think , I should have raised a separate jira immediately when I saw the 
problem (during PHOENIX-2901), so that you guys aware of this.

do you mind trying the patch available on PHOENIX-2901 for now(until I 
segregate the changes from that patch)


> TNF exception for SYSTEM.STATS and SYSTEM.SEQUENCE table after enabling 
> namespace
> ---------------------------------------------------------------------------------
>
>                 Key: PHOENIX-2977
>                 URL: https://issues.apache.org/jira/browse/PHOENIX-2977
>             Project: Phoenix
>          Issue Type: Bug
>            Reporter: Mujtaba Chohan
>            Assignee: Ankit Singhal
>             Fix For: 4.8.0
>
>
> Environment: 4.x-HBase-0.98 
> [commit|https://git-wip-us.apache.org/repos/asf?p=phoenix.git;a=commit;h=82295b5d236554b2fec83ebdedee701005fcc04b]
>  | HBase 0.98.17
> {{phoenix.schema.isNamespaceMappingEnabled}} is set to true and both client 
> and server restarted. After upgrade of SYSTEM.* tables to namespace, both 
> SYSTEM.STATS and SYSTEM.SEQUENCE throw TableNotFoundException.
> {code}
> select * from SYSTEM.STATS;
> Error: ERROR 1012 (42M03): Table undefined. tableName=SYSTEM.STATS 
> (state=42M03,code=1012)
> org.apache.phoenix.schema.TableNotFoundException: ERROR 1012 (42M03): Table 
> undefined. tableName=SYSTEM.STATS
>       at 
> org.apache.phoenix.query.ConnectionQueryServicesImpl.getAllTableRegions(ConnectionQueryServicesImpl.java:549)
>       at 
> org.apache.phoenix.iterate.BaseResultIterators.getParallelScans(BaseResultIterators.java:558)
>       at 
> org.apache.phoenix.iterate.BaseResultIterators.getParallelScans(BaseResultIterators.java:493)
>       at 
> org.apache.phoenix.iterate.BaseResultIterators.<init>(BaseResultIterators.java:366)
>       at 
> org.apache.phoenix.iterate.ParallelIterators.<init>(ParallelIterators.java:59)
>       at org.apache.phoenix.execute.ScanPlan.newIterator(ScanPlan.java:225)
>       at 
> org.apache.phoenix.execute.BaseQueryPlan.iterator(BaseQueryPlan.java:320)
>       at 
> org.apache.phoenix.execute.BaseQueryPlan.iterator(BaseQueryPlan.java:216)
>       at 
> org.apache.phoenix.jdbc.PhoenixStatement$1.call(PhoenixStatement.java:278)
>       at 
> org.apache.phoenix.jdbc.PhoenixStatement$1.call(PhoenixStatement.java:263)
>       at org.apache.phoenix.call.CallRunner.run(CallRunner.java:53)
>       at 
> org.apache.phoenix.jdbc.PhoenixStatement.executeQuery(PhoenixStatement.java:262)
>       at 
> org.apache.phoenix.jdbc.PhoenixStatement.execute(PhoenixStatement.java:1392)
> {code}
>  



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