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From "ofer fort (JIRA)" <j...@apache.org>
Subject [jira] Commented: (SOLR-1990) blockUntilFinished() is called in StreamingUpdateSolrServer when deleing by id
Date Thu, 08 Jul 2010 17:50:50 GMT

    [ https://issues.apache.org/jira/browse/SOLR-1990?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12886389#action_12886389
] 

ofer fort commented on SOLR-1990:
---------------------------------

I am not sure, still investigating.
At a specific moment i had two threads trying to delete two documents, and a
few others that were adding documents.
The ones deleting were both parking(waiting on the lock), so my big concern
is that it's actually a deadlock, but still not sure

two thread with:
  "IndexWorker0" prio=5 tid=267 WAITING
    at sun.misc.Unsafe.park(Native Method)
    at java.util.concurrent.locks.LockSupport.park(LockSupport.java:158)
    at
java.util.concurrent.locks.AbstractQueuedSynchronizer.parkAndCheckInterrupt(AbstractQueuedSynchronizer.java:747)
    at
java.util.concurrent.locks.AbstractQueuedSynchronizer.acquireQueued(AbstractQueuedSynchronizer.java:778)
    at
java.util.concurrent.locks.AbstractQueuedSynchronizer.acquire(AbstractQueuedSynchronizer.java:1114)
    at
java.util.concurrent.locks.ReentrantLock$NonfairSync.lock(ReentrantLock.java:186)
    at java.util.concurrent.locks.ReentrantLock.lock(ReentrantLock.java:262)
    at
org.apache.solr.client.solrj.impl.StreamingUpdateSolrServer.blockUntilFinished(StreamingUpdateSolrServer.java:232)
    at
org.apache.solr.client.solrj.impl.StreamingUpdateSolrServer.request(StreamingUpdateSolrServer.java:181)
    at
org.apache.solr.client.solrj.request.AbstractUpdateRequest.process(AbstractUpdateRequest.java:105)
    at
org.apache.solr.client.solrj.SolrServer.deleteById(SolrServer.java:102)


a few threads with:
  "pool-1-thread-158" prio=5 tid=1288 RUNNABLE
    at java.net.SocketInputStream.socketRead0(Native Method)
    at java.net.SocketInputStream.read(SocketInputStream.java:129)
    at java.io.BufferedInputStream.fill(BufferedInputStream.java:218)
    at java.io.BufferedInputStream.read(BufferedInputStream.java:237)
    at
org.apache.commons.httpclient.HttpParser.readRawLine(HttpParser.java:78)
    at
org.apache.commons.httpclient.HttpParser.readLine(HttpParser.java:106)
    at
org.apache.commons.httpclient.HttpConnection.readLine(HttpConnection.java:1116)
    at
org.apache.commons.httpclient.MultiThreadedHttpConnectionManager$HttpConnectionAdapter.readLine(MultiThreadedHttpConnectionManager.java:1413)
    at
org.apache.commons.httpclient.HttpMethodBase.readStatusLine(HttpMethodBase.java:1973)
    at
org.apache.commons.httpclient.HttpMethodBase.readResponse(HttpMethodBase.java:1735)
    at
org.apache.commons.httpclient.HttpMethodBase.execute(HttpMethodBase.java:1098)
    at
org.apache.commons.httpclient.HttpMethodDirector.executeWithRetry(HttpMethodDirector.java:398)
    at
org.apache.commons.httpclient.HttpMethodDirector.executeMethod(HttpMethodDirector.java:171)
    at
org.apache.commons.httpclient.HttpClient.executeMethod(HttpClient.java:397)
    at
org.apache.commons.httpclient.HttpClient.executeMethod(HttpClient.java:323)
    at
org.apache.solr.client.solrj.impl.StreamingUpdateSolrServer$Runner.run(StreamingUpdateSolrServer.java:137)






> blockUntilFinished() is called in StreamingUpdateSolrServer when deleing by id
> ------------------------------------------------------------------------------
>
>                 Key: SOLR-1990
>                 URL: https://issues.apache.org/jira/browse/SOLR-1990
>             Project: Solr
>          Issue Type: Bug
>          Components: clients - java
>    Affects Versions: 1.4.1
>            Reporter: ofer fort
>   Original Estimate: 24h
>  Remaining Estimate: 24h
>
> in the StreamingUpdateSolrServer .request() it identifies a commit/optimize request by
having no document, but also the delete doesn't have a docuemnt.
>     // this happens for commit...
>     if( req.getDocuments()==null || req.getDocuments().isEmpty() ) {
>       blockUntilFinished();

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