Jessica Cheng created SOLR-6146:
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Summary: Leak in CloudSolrServer causing "Too many open files"
Key: SOLR-6146
URL: https://issues.apache.org/jira/browse/SOLR-6146
Project: Solr
Issue Type: Bug
Components: clients - java, SolrCloud
Affects Versions: 4.7
Reporter: Jessica Cheng
Due to a misconfiguration in one of our QA clusters, we uncovered a leak in
CloudSolrServer. If this line throws:
https://github.com/apache/lucene-solr/blob/branch_4x/solr/solrj/src/java/org/apache/solr/client/solrj/impl/CloudSolrServer.java#L242
then the instantiated ZkStateReader is leaked.
Here's the stacktrace of the Exception (we're using a custom build so the line
numbers won't quite match up, but it gives the idea):
at
org.apache.solr.client.solrj.impl.CloudSolrServer.connect(CloudSolrServer.java:304)
at
org.apache.solr.client.solrj.impl.CloudSolrServer.requestWithRetryOnStaleState(CloudSolrServer.java:568)
at
org.apache.solr.client.solrj.impl.CloudSolrServer.request(CloudSolrServer.java:557)
at
org.apache.solr.client.solrj.request.AbstractUpdateRequest.process(AbstractUpdateRequest.java:117)
at
org.apache.solr.client.solrj.request.AbstractUpdateRequest.process(AbstractUpdateRequest.java:33)
at
com.apple.cie.search.client.crossdc.MirroredSolrRequestHandler.handleItem(MirroredSolrRequestHandler.java:100)
at
com.apple.cie.search.client.crossdc.MirroredSolrRequestHandler.handleItem(MirroredSolrRequestHandler.java:33)
at
com.apple.coda.queueing.CodaQueueConsumer$StreamProcessor.run(CodaQueueConsumer.java:147)
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)
at java.lang.Thread.run(Thread.java:722) Caused by:
org.apache.zookeeper.KeeperException$NoNodeException: KeeperErrorCode = NoNode
for /live_nodes at
org.apache.zookeeper.KeeperException.create(KeeperException.java:111) at
org.apache.zookeeper.KeeperException.create(KeeperException.java:51) at
org.apache.zookeeper.ZooKeeper.getChildren(ZooKeeper.java:1468) at
org.apache.solr.common.cloud.SolrZkClient$6.execute(SolrZkClient.java:256) at
org.apache.solr.common.cloud.SolrZkClient$6.execute(SolrZkClient.java:253) at
org.apache.solr.common.cloud.ZkCmdExecutor.retryOperation(ZkCmdExecutor.java:73)
at
org.apache.solr.common.cloud.SolrZkClient.getChildren(SolrZkClient.java:253) at
org.apache.solr.common.cloud.ZkStateReader.createClusterStateWatchersAndUpdate(ZkStateReader.java:305)
at
org.apache.solr.client.solrj.impl.CloudSolrServer.createZkStateReader(CloudSolrServer.java:935)
at
org.apache.solr.client.solrj.impl.CloudSolrServer.connect(CloudSolrServer.java:298)
... 10 more
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