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From "stack (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HBASE-627) Disable table doesn't work reliably
Date Fri, 27 Jun 2008 15:18:45 GMT

    [ https://issues.apache.org/jira/browse/HBASE-627?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12608803#action_12608803
] 

stack commented on HBASE-627:
-----------------------------

HBASE-713 is about offliining/onlining not being reliiable on branch.  I got around the issue
by writing a script that went through the regions that wouldn't offline individually offlining
them.  I was then able to add my new column.  But I just noticed that the add column didn't
apply to all regions, just to most.  Would suggest that this issue also cover this case; i.e.
not just enabling/disabling but also guarantee that add/edit/delete of columns works too.

> Disable table doesn't work reliably
> -----------------------------------
>
>                 Key: HBASE-627
>                 URL: https://issues.apache.org/jira/browse/HBASE-627
>             Project: Hadoop HBase
>          Issue Type: Bug
>    Affects Versions: 0.2.0
>         Environment: Hadoop/HBase on two nodes
>            Reporter: Michaela Buergle
>            Assignee: Jim Kellerman
>            Priority: Critical
>             Fix For: 0.2.0
>
>         Attachments: disableTable31.log, disableTable5.log, patch.txt
>
>
> When creating a couple of tables like this:
> 1) create an empty table
> 2) disable table, add new column family, enable table
> 3) put 100 small documents into newly created column
> around once in 10 tries the disable doesn't happen.
> I have no clue as to why the table isn't disabled in the first place, but if this occurs,
two things in HBaseAdmin.disableTable() strike me as odd:
> - after numRetries tries to wait for disabling we exit the loop; there is no exception
or error message:
> ...
> 2008-05-14 16:19:47,903 INFO org.apache.hadoop.hbase.client.HBaseAdmin: Disabled table
table31
> 2008-05-14 16:19:47,910 INFO org.apache.hadoop.ipc.Server: IPC Server handler 3 on 60000,
call addColumn(table31, {name: document, max versions: 3, compression: NONE, in memory: false,
block cache enabled: false, max length: 2147483647, time to live: FOREVER, bloom filter: none})
from XXX.XX.40.36:47116: error: org.apache.hadoop.hbase.TableNotDisabledException: table31
> ...
> - the scanner iterates over HRegionInfos of several tables. If any one of those is disabled,
we also leave the loop as if the requested table had been disabled.
> I've had this disabling problem occur quite reliably over the last days - today I couldn't
reproduce it, though HBase version hasn't changed. ???

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