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Posted to dev@bookkeeper.apache.org by "Flavio Junqueira (Updated) (JIRA)" <ji...@apache.org> on 2012/04/06 14:51:24 UTC
[jira] [Updated] (BOOKKEEPER-212) Bookie stops responding when
creating and deleting many ledgers
[ https://issues.apache.org/jira/browse/BOOKKEEPER-212?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Flavio Junqueira updated BOOKKEEPER-212:
----------------------------------------
Fix Version/s: 4.1.0
> Bookie stops responding when creating and deleting many ledgers
> ---------------------------------------------------------------
>
> Key: BOOKKEEPER-212
> URL: https://issues.apache.org/jira/browse/BOOKKEEPER-212
> Project: Bookkeeper
> Issue Type: Bug
> Reporter: Flavio Junqueira
> Priority: Blocker
> Fix For: 4.1.0
>
>
> I have written down a short app to try to reproduce one problematic case reported on the user list. The app does the following:
> # It creates initially a number of ledgers, say 2000;
> # Once it reaches 2000, for each new ledger it creates, it deletes the one at the head of the list;
> # Before closing the ledger, it adds 5 entries of 1k, just to generate some traffic for any given ledger.
> What I tried to achieve is to have thousands of active ledgers and delete new ledgers as I create new ones. I'll post a link to my test code later.
> At some point, one bookie stops responding. The bookie seems to be up, but it is not responsive. Looking at the logs, this is what I see:
> {noformat}
> 2012-04-06 12:22:05,765 - INFO [SyncThread:LedgerCacheImpl@682] - Ledger 1726 is evicted from file info cache.
> 2012-04-06 12:22:05,769 - INFO [NIOServerFactory-3181:LedgerCacheImpl@682] - Ledger 1727 is evicted from file info cache.
> 2012-04-06 12:22:05,772 - INFO [SyncThread:LedgerCacheImpl@682] - Ledger 1728 is evicted from file info cache.
> 2012-04-06 12:22:05,780 - INFO [NIOServerFactory-3181:LedgerCacheImpl@682] - Ledger 1729 is evicted from file info cache.
> 2012-04-06 12:22:05,787 - INFO [NIOServerFactory-3181:LedgerCacheImpl@682] - Ledger 1730 is evicted from file info cache.
> 2012-04-06 12:22:05,794 - INFO [NIOServerFactory-3181:LedgerCacheImpl@682] - Ledger 1731 is evicted from file info cache.
> 2012-04-06 12:22:05,801 - INFO [NIOServerFactory-3181:LedgerCacheImpl@682] - Ledger 1732 is evicted from file info cache.
> 2012-04-06 12:22:05,807 - INFO [NIOServerFactory-3181:LedgerCacheImpl@682] - Ledger 1733 is evicted from file info cache.
> 2012-04-06 12:22:05,822 - INFO [NIOServerFactory-3181:LedgerCacheImpl@682] - Ledger 1734 is evicted from file info cache.
> 2012-04-06 12:22:05,828 - INFO [NIOServerFactory-3181:LedgerCacheImpl@682] - Ledger 1735 is evicted from file info cache.
> 2012-04-06 12:22:05,842 - INFO [NIOServerFactory-3181:LedgerCacheImpl@682] - Ledger 1736 is evicted from file info cache.
> 2012-04-06 12:22:05,851 - INFO [NIOServerFactory-3181:LedgerCacheImpl@682] - Ledger 1737 is evicted from file info cache.
> 2012-04-06 12:22:05,856 - INFO [NIOServerFactory-3181:LedgerCacheImpl@682] - Ledger 1738 is evicted from file info cache.
> 2012-04-06 12:22:05,864 - INFO [NIOServerFactory-3181:LedgerCacheImpl@682] - Ledger 1739 is evicted from file info cache.
> 2012-04-06 12:22:05,874 - INFO [NIOServerFactory-3181:LedgerCacheImpl@682] - Ledger 1740 is evicted from file info cache.
> 2012-04-06 12:22:05,885 - INFO [NIOServerFactory-3181:LedgerCacheImpl@682] - Ledger 1741 is evicted from file info cache.
> 2012-04-06 12:22:05,894 - INFO [NIOServerFactory-3181:LedgerCacheImpl@682] - Ledger 1742 is evicted from file info cache.
> 2012-04-06 12:22:05,902 - INFO [NIOServerFactory-3181:LedgerCacheImpl@682] - Ledger 1743 is evicted from file info cache.
> 2012-04-06 12:22:05,987 - INFO [GarbageCollectorThread:LedgerCacheImpl@682] - Ledger 1744 is evicted from file info cache.
> 2012-04-06 12:22:05,987 - ERROR [GarbageCollectorThread:GarbageCollectorThread$1@244] - Exception when deleting the ledger index file on the Bookie:
> java.io.IOException: /home/fpj/bk/current/1/b/10b.idx not found
> at org.apache.bookkeeper.bookie.FileInfo.checkOpen(FileInfo.java:118)
> at org.apache.bookkeeper.bookie.FileInfo.close(FileInfo.java:194)
> at org.apache.bookkeeper.bookie.LedgerCacheImpl.deleteLedger(LedgerCacheImpl.java:619)
> at org.apache.bookkeeper.bookie.GarbageCollectorThread$1.gc(GarbageCollectorThread.java:242)
> at org.apache.bookkeeper.meta.AbstractZkLedgerManager.doGc(AbstractZkLedgerManager.java:274)
> at org.apache.bookkeeper.meta.FlatLedgerManager.garbageCollectLedgers(FlatLedgerManager.java:168)
> at org.apache.bookkeeper.bookie.GarbageCollectorThread.doGcLedgers(GarbageCollectorThread.java:237)
> at org.apache.bookkeeper.bookie.GarbageCollectorThread.run(GarbageCollectorThread.java:206)
> 2012-04-06 12:22:05,987 - INFO [GarbageCollectorThread:LedgerCacheImpl@682] - Ledger 1745 is evicted from file info cache.
> {noformat}
> There are lots of exceptions like that, but otherwise I don't see anything that could make the bookie unresponsive. I'll upload the logs as well.
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