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https://issues.apache.org/jira/browse/HBASE-655?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12601492#action_12601492
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Michael Bieniosek commented on HBASE-655:
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If it can't be synchronous, it would help to at least have a isTableOffline()
method, which could at least allow clients to check whether they should send
add/modify/deleteColumn requests.
> need programmatic way to add column family: need programmatic way to
> enable/disable table
> -----------------------------------------------------------------------------------------
>
> Key: HBASE-655
> URL: https://issues.apache.org/jira/browse/HBASE-655
> Project: Hadoop HBase
> Issue Type: Bug
> Reporter: Michael Bieniosek
> Fix For: 0.2.0
>
>
> From HADOOP-2292:
> > What you might do is open a HTable on the META region
> > (HConstants.META_TABLE_NAME) and scan HConstants.COL_REGIONINFO_ARRAY which
> > will give you back HRegionInfo objects (as bytes).
> > Find the table in question by comparing your table name to
> > regionInfo.getTableDesc().getName()
> > If adding or deleting columns, check regionInfo.getTableDesc().hasFamily()
> > If changing table on/off line check regionInfo.isOffline()
> > If any of the regions don't meet the criteria, close the scanner, sleep and
> > rescan.
> This is a bit too complicated for me. If you won't make
> enableTable/disableTable synchronous, we should at least have a
> HTable.isTableDisabled method.
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