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https://issues.apache.org/jira/browse/HBASE-18?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12622036#action_12622036
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stack commented on HBASE-18:
----------------------------
Just wrote a little loop in shell doing create/delete. Runs for a good while
but then craps out with:
{code}
hbase(main):001:0> list
NativeException: java.lang.NullPointerException: null
from org/apache/hadoop/hbase/client/HConnectionManager.java:300:in
`processRow'
from org/apache/hadoop/hbase/client/MetaScanner.java:62:in `metaScan'
from org/apache/hadoop/hbase/client/MetaScanner.java:29:in `metaScan'
from org/apache/hadoop/hbase/client/HConnectionManager.java:307:in
`listTables'
{code}
Eventually recovers.
So I suppose its better than it was.
Goes too fast. I see the create/delete messages in master but not the opening
of the region out on the regionserver. This is async I suppose?
> [hbase] A sequence of create/delete/create/etc. generates 'info:regioninfo is
> empty; has keys:' and eventually fails
> --------------------------------------------------------------------------------------------------------------------
>
> Key: HBASE-18
> URL: https://issues.apache.org/jira/browse/HBASE-18
> Project: Hadoop HBase
> Issue Type: Bug
> Reporter: stack
> Priority: Minor
> Attachments: hbase-dave-master-hendrix.log
>
>
> Marking as minor issue since its a concurrency issue in admin function.
> Though that said, this is a guaranteed way to generate rows in META that are
> without their regioninfo (Looks like we might add startcode and servername
> after a row has had its regioninfo removed).
> Issue was found by Dave Simpson running a create/delete/create sequence.
> Attaching log.
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