thanks Mark, I will give it a go and report back...
On Thu, Feb 23, 2012 at 1:31 AM, Mark Miller <markrmil...@gmail.com> wrote:
> Looks like an issue around replication IndexWriter reboot, soft commits and
> hard commits.
>
> I think I've got a workaround for it:
>
> Index: solr/core/src/java/org/apache/solr/handler/SnapPuller.java
> ===================================================================
> --- solr/core/src/java/org/apache/solr/handler/SnapPuller.java (revision
> 1292344)
> +++ solr/core/src/java/org/apache/solr/handler/SnapPuller.java (working copy)
> @@ -499,6 +499,17 @@
>
> // reboot the writer on the new index and get a new searcher
> solrCore.getUpdateHandler().newIndexWriter();
> + Future[] waitSearcher = new Future[1];
> + solrCore.getSearcher(true, false, waitSearcher, true);
> + if (waitSearcher[0] != null) {
> + try {
> + waitSearcher[0].get();
> + } catch (InterruptedException e) {
> + SolrException.log(LOG,e);
> + } catch (ExecutionException e) {
> + SolrException.log(LOG,e);
> + }
> + }
> // update our commit point to the right dir
> solrCore.getUpdateHandler().commit(new CommitUpdateCommand(req, false));
>
> That should allow the searcher that the following commit command prompts to
> see the *new* IndexWriter.
>
> On Feb 22, 2012, at 10:56 AM, eks dev wrote:
>
>> We started observing strange failures from ReplicationHandler when we
>> commit on master.... trunk version 4-5 days old.
>> It works sometimes, and sometimes not.... didn't dig deeper yet.
>>
>> Looks like the real culprit hides behind:
>> org.apache.lucene.store.AlreadyClosedException: this IndexWriter is closed
>>
>> Looks familiar to somebody?
>>
>>
>> 120222 154959 SEVERE SnapPull failed
>> :org.apache.solr.common.SolrException: Error opening new searcher
>> at org.apache.solr.core.SolrCore.openNewSearcher(SolrCore.java:1138)
>> at org.apache.solr.core.SolrCore.getSearcher(SolrCore.java:1251)
>> at org.apache.solr.core.SolrCore.getSearcher(SolrCore.java:1043)
>> at org.apache.solr.update.DirectUpdateHandler2.commit(Unknown Source)
>> at org.apache.solr.handler.SnapPuller.doCommit(SnapPuller.java:503)
>> at
>> org.apache.solr.handler.SnapPuller.fetchLatestIndex(SnapPuller.java:348)
>> at org.apache.solr.handler.ReplicationHandler.doFetch(Unknown Source)
>> at org.apache.solr.handler.SnapPuller$1.run(SnapPuller.java:163)
>> at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
>> at
>> java.util.concurrent.FutureTask$Sync.innerRunAndReset(FutureTask.java:351)
>> at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:178)
>> at
>> java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:178)
>> at
>> java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:293)
>> at
>> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110)
>> at
>> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)
>> at java.lang.Thread.run(Thread.java:722)
>> Caused by: org.apache.lucene.store.AlreadyClosedException: this
>> IndexWriter is closed
>> at org.apache.lucene.index.IndexWriter.ensureOpen(IndexWriter.java:810)
>> at org.apache.lucene.index.IndexWriter.ensureOpen(IndexWriter.java:815)
>> at org.apache.lucene.index.IndexWriter.nrtIsCurrent(IndexWriter.java:3984)
>> at
>> org.apache.lucene.index.StandardDirectoryReader.doOpenFromWriter(StandardDirectoryReader.java:254)
>> at
>> org.apache.lucene.index.StandardDirectoryReader.doOpenIfChanged(StandardDirectoryReader.java:233)
>> at
>> org.apache.lucene.index.StandardDirectoryReader.doOpenIfChanged(StandardDirectoryReader.java:223)
>> at
>> org.apache.lucene.index.DirectoryReader.openIfChanged(DirectoryReader.java:170)
>> at org.apache.solr.core.SolrCore.openNewSearcher(SolrCore.java:1095)
>> ... 15 more
>
> - Mark Miller
> lucidimagination.com
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