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https://issues.apache.org/jira/browse/BOOKKEEPER-568?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13578949#comment-13578949
]
Hudson commented on BOOKKEEPER-568:
-----------------------------------
Integrated in bookkeeper-trunk #103 (See
[https://builds.apache.org/job/bookkeeper-trunk/103/])
BOOKKEEPER-568: NPE during GC with HierarchicalLedgerManager (Matteo via
sijie) (Revision 1446444)
Result = SUCCESS
sijie :
Files :
* /zookeeper/bookkeeper/trunk/CHANGES.txt
*
/zookeeper/bookkeeper/trunk/bookkeeper-server/src/main/java/org/apache/bookkeeper/meta/HierarchicalLedgerManager.java
*
/zookeeper/bookkeeper/trunk/bookkeeper-server/src/test/java/org/apache/bookkeeper/meta/LedgerManagerIteratorTest.java
> NPE during GC with HierarchicalLedgerManager
> --------------------------------------------
>
> Key: BOOKKEEPER-568
> URL: https://issues.apache.org/jira/browse/BOOKKEEPER-568
> Project: Bookkeeper
> Issue Type: Bug
> Components: bookkeeper-server
> Affects Versions: 4.2.0
> Reporter: Matteo Merli
> Assignee: Matteo Merli
> Priority: Minor
> Fix For: 4.3.0, 4.2.1
>
> Attachments:
> 0001-BOOKKEEPER-568-NPE-during-GC-with-HierarchicalLedger.patch
>
>
> {noformat}
> 2013-02-11 14:06:28,904 - WARN -
> [GarbageCollectorThread:ScanAndCompareGarbageCollector@103] - Exception when
> iterating over the metadata {}
> java.io.IOException: Error when check more elements
> at
> org.apache.bookkeeper.meta.HierarchicalLedgerManager$HierarchicalLedgerRangeIterator.hasNext(HierarchicalLedgerManager.java:423)
> at
> org.apache.bookkeeper.bookie.ScanAndCompareGarbageCollector.gc(ScanAndCompareGarbageCollector.java:75)
> at
> org.apache.bookkeeper.bookie.GarbageCollectorThread.doGcLedgers(GarbageCollectorThread.java:302)
> at
> org.apache.bookkeeper.bookie.GarbageCollectorThread.run(GarbageCollectorThread.java:271)
> Caused by: java.lang.NullPointerException
> at
> org.apache.bookkeeper.meta.HierarchicalLedgerManager$HierarchicalLedgerRangeIterator.hasNext(HierarchicalLedgerManager.java:419)
> ... 3 more
> {noformat}
> In the code below, l2NodesIter appears to be null.
> {code}
> public boolean hasNext() throws IOException {
> try {
> if (l1NodesIter == null) {
> l1NodesIter = zk.getChildren(ledgerRootPath, null).iterator();
> hasMoreElement = nextL1Node();
> } else if (!l2NodesIter.hasNext()) {
> hasMoreElement = nextL1Node();
> }
> } catch (Exception e) {
> throw new IOException("Error when check more elements", e);
> }
> return hasMoreElement;
> }
> {code}
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