waitForMerges deadlocks if background merge fails -------------------------------------------------
Key: LUCENE-3373 URL: https://issues.apache.org/jira/browse/LUCENE-3373 Project: Lucene - Java Issue Type: Bug Components: core/index Affects Versions: 3.0.3 Reporter: Tim Smith waitForMerges can deadlock if a merge fails for ConcurrentMergeScheduler this is because the merge thread will die, but pending merges are still available normally, the merge thread will pick up the next merge once it finishes the previous merge, but in the event of a merge exception, the pending work is not resumed, but waitForMerges won't complete until all pending work is complete i worked around this by overriding doMerge() like so: {code} protected final void doMerge(MergePolicy.OneMerge merge) throws IOException { try { super.doMerge(merge); } catch (Throwable exc) { // Just logging the exception and not rethrowing // insert logging code here } } {code} Here's the rough steps i used to reproduce this issue: override doMerge like so {code} protected final void doMerge(MergePolicy.OneMerge merge) throws IOException { try {Thread.sleep(500L);} catch (InterruptedException e) { } super.doMerge(merge); throw new IOException("fail"); } {code} then, if you do the following: loop 50 times: addDocument // any doc commit waitForMerges // This will deadlock sometimes SOLR-2017 may be related to this (stack trace for deadlock looked related) -- This message is automatically generated by JIRA. For more information on JIRA, see: http://www.atlassian.com/software/jira --------------------------------------------------------------------- To unsubscribe, e-mail: dev-unsubscr...@lucene.apache.org For additional commands, e-mail: dev-h...@lucene.apache.org