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https://issues.apache.org/jira/browse/HBASE-1634?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12729339#action_12729339
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stack commented on HBASE-1634:
------------------------------
Here is sample NPE:
{code}
java.lang.NullPointerException
at org.apache.hadoop.hbase.util.Writables.getWritable(Writables.java:74)
at
org.apache.hadoop.hbase.util.Writables.getHRegionInfo(Writables.java:118)
at
org.apache.hadoop.hbase.client.HConnectionManager$TableServers$1.processRow(HConnectionManager.java:355)
at
org.apache.hadoop.hbase.client.MetaScanner.metaScan(MetaScanner.java:63)
at
org.apache.hadoop.hbase.client.MetaScanner.metaScan(MetaScanner.java:28)
at
org.apache.hadoop.hbase.client.HConnectionManager$TableServers.listTables(HConnectionManager.java:369)
at
org.apache.hadoop.hbase.client.HBaseAdmin.listTables(HBaseAdmin.java:127)
..
{code}
This is not same as the old NPE we used to get in BaseScanner back in the day.
> UI and shell list throw NPE
> ---------------------------
>
> Key: HBASE-1634
> URL: https://issues.apache.org/jira/browse/HBASE-1634
> Project: Hadoop HBase
> Issue Type: Bug
> Reporter: stack
> Fix For: 0.20.0
>
>
> I have a .META. from bryan duxbury that has a row with only historian data.
> List does whole row, not just info, so if only historian entries, a row is
> returned. We then try and get a regioninfo from this row and NPE.
> As to why this happens, jd suggests that since we moved to async historian
> updates, row may have been deleted already. Confirm.
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