sunyerui created HBASE-14229: -------------------------------- Summary: Flushing canceled by coprocessor still leads to memstoreSize set down Key: HBASE-14229 URL: https://issues.apache.org/jira/browse/HBASE-14229 Project: HBase Issue Type: Bug Components: regionserver Affects Versions: 1.1.1, 0.98.13, 1.0.2, 1.2.0 Reporter: sunyerui
A Coprocessor override "public InternalScanner preFlush(final Store store, final InternalScanner scanner)" and return NULL when calling this method, will cancel flush request, leaving snapshot un-flushed, and no new storefile created. But the HRegion.internalFlushCache still set down memstoreSize to 0 by totalFlushableSize. If there's no write requests anymore, the memstoreSize will remaining as 0, and no more flush quests will be processed because of the checking of memstoreSize.get() <=0 at the beginning of internalFlushCache. This issue may not cause data loss, but it will confuse coprocessor users. If we argree with this, I'll apply a patch later. -- This message was sent by Atlassian JIRA (v6.3.4#6332)