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
