Unhealthy region is on service caused by rollback of region splitting
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Key: HBASE-4881
URL: https://issues.apache.org/jira/browse/HBASE-4881
Project: HBase
Issue Type: Bug
Reporter: chunhui shen
If region splitting is failed in the state of JournalEntry.CLOSED_PARENT_REGION
It will be rollback as the following steps:
{code}
1.case CLOSED_PARENT_REGION:
this.parent.initialize();
break;
2.case CREATE_SPLIT_DIR:
this.parent.writestate.writesEnabled = true;
cleanupSplitDir(fs, this.splitdir);
break;
3.case SET_SPLITTING_IN_ZK:
if (server != null && server.getZooKeeper() != null) {
cleanZK(server, this.parent.getRegionInfo());
}
break;
{code}
If this.parent.initialize() throws IOException in step 1,
If check filesystem is ok. it will do nothing.
However, the parent region is on service now.
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