zhou wenjian created HBASE-6473:
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Summary: deleted table may be not deleted regions completely, some
region maybe 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
Fix For: 0.96.0, 0.94.2
consider such Scenario:
wo 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 the region is opened, the region in transition will
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.
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");
}
howover the region is still being unassigned, when it finished closed the
region,it finds that the closed state in zk is deleted, and then it will be
assigned again.
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