When split occurs error,it'll cause data loss
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Key: HBASE-4562
URL: https://issues.apache.org/jira/browse/HBASE-4562
Project: HBase
Issue Type: Bug
Components: regionserver
Affects Versions: 0.90.4
Reporter: bluedavy
Priority: Blocker
Fix For: 0.90.5
Follow below steps to replay the problem:
1. change the SplitTransaction.java as below,just like mock the timeout error.
{code:title=SplitTransaction.java|borderStyle=solid}
if (!testing) {
MetaEditor.offlineParentInMeta(server.getCatalogTracker(),
this.parent.getRegionInfo(), a.getRegionInfo(), b.getRegionInfo());
throw new IOException("some unexpected error in split");
}
{code}
2. update the regionserver code,restart;
3. create a table & put some data to the table;
4. split the table;
5. kill the regionserver hosted the table;
6. wait some time after master ServerShutdownHandler.process execute,then scan
the table,u'll find the data wrote before lost.
We can fix the bug just use below code:
{code:title=SplitTransaction.java|borderStyle=solid}
this.journal.add(JournalEntry.PONR);
if (!testing) {
MetaEditor.offlineParentInMeta(server.getCatalogTracker(),
this.parent.getRegionInfo(), a.getRegionInfo(), b.getRegionInfo());
throw new IOException("some unexpected error in split");
}
{code}
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