[
https://issues.apache.org/jira/browse/HBASE-655?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12601488#action_12601488
]
Michael Bieniosek commented on HBASE-655:
-----------------------------------------
enableTable isn't synchronous, so if I call add/modify/deleteColumn immediately
after calling enableTable, I get an exception because the table isn't disabled.
There's no way to know how long to wait for the table to go offline. There's
no way to wait in a loop and check to see if the table is offline. The best I
can do is sleep and catch TableNotDisabledException in a loop, which seems kind
of silly.
> 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.
--
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.
