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https://issues.apache.org/jira/browse/HBASE-6473?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Zhihong Ted Yu reassigned HBASE-6473:
-------------------------------------
Assignee: Zhou wenjian
> deleted table is not deleted completely, some region may be still online
> ------------------------------------------------------------------------
>
> Key: HBASE-6473
> URL: https://issues.apache.org/jira/browse/HBASE-6473
> Project: HBase
> Issue Type: Bug
> Affects Versions: 0.94.0
> Reporter: zhou wenjian
> Assignee: Zhou wenjian
> Fix For: 0.96.0, 0.94.2
>
> Attachments: HBASE-6473-trunk.patch, HBASE-6473-trunk-v2.patch,
> HBASE-6473-trunk-v3.patch
>
>
> consider such Scenario:
> we have a table called T1, which has 1 regions: A
> 1. move A from rs1 to rs2,and A is now closed
> 2. disable T1,
> 3. delete T1.
> when we disable T1, disable handler will just set the zk to disabled and A
> will still be assigned. when Ais opened, A in transition will be clean out.
> At that time, Deletetable found it is safe to delete all regions and table in
> meta and fs , it will also delete the zk node of T1.
> {code}
> while (System.currentTimeMillis() < done) {
> AssignmentManager.RegionState rs = am.isRegionInTransition(region);
> if (rs == null) break;
> Threads.sleep(waitingTimeForEvents);
> LOG.debug("Waiting on region to clear regions in transition; " + rs);
> }
> if (am.isRegionInTransition(region) != null) {
> throw new IOException("Waited hbase.master.wait.on.region (" +
> waitTime + "ms) for region to leave region " +
> region.getRegionNameAsString() + " in transitions");
> }
> {code}
> however A is still being unassigned, when it finished closed the A,it finds
> that the disabled state in zk is deleted, and then A will be assigned again.
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