binlijin created HBASE-17118:
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Summary: StoreScanner leaked in KeyValueHeap
Key: HBASE-17118
URL: https://issues.apache.org/jira/browse/HBASE-17118
Project: HBase
Issue Type: Bug
Reporter: binlijin
KeyValueHeap#generalizedSeek
KeyValueScanner scanner = current;
while (scanner != null) {
Cell topKey = scanner.peek();
......
boolean seekResult;
if (isLazy && heap.size() > 0) {
// If there is only one scanner left, we don't do lazy seek.
seekResult = scanner.requestSeek(seekKey, forward, useBloom);
} else {
seekResult = NonLazyKeyValueScanner.doRealSeek(scanner, seekKey,
forward);
}
......
scanner = heap.poll();
}
(1) scanner = heap.poll(); Retrieves and removes the head of this queue
(2) scanner.requestSeek(seekKey, forward, useBloom); or
NonLazyKeyValueScanner.doRealSeek(scanner, seekKey, forward);
throw exception, and scanner will have no change to close, so will cause the
scanner leak.
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