The reason is GC pauses mostly at the client side and not the server side. I guess you are using solrj client and this exception is thrown in the client logs.
On Fri, May 19, 2017 at 11:46 PM, Joel Bernstein <joels...@gmail.com> wrote: > Odd, I haven't run into this behavior. Are you getting the disconnect from > the client side, or is this happening in a stream being run inside Solr? > > > > Joel Bernstein > http://joelsolr.blogspot.com/ > > On Fri, May 19, 2017 at 1:40 PM, Timothy Potter <thelabd...@gmail.com> > wrote: > > > No, not every time, but there was no GC pause on the Solr side (no > > gaps in the log, nothing in the gc log) ... in the zk log, I do see > > this around the same time: > > > > 2017-05-05T13:59:52,362 - INFO > > [NIOServerCxn.Factory:0.0.0.0/0.0.0.0:9983:NIOServerCnxn@1007] - > > Closed socket connection for client /127.0.0.1:54140 which had > > sessionid 0x15bd8bdd3500022 > > 2017-05-05T13:59:52,818 - WARN > > [NIOServerCxn.Factory:0.0.0.0/0.0.0.0:9983:NIOServerCnxn@357] - caught > > end of stream exception > > org.apache.zookeeper.server.ServerCnxn$EndOfStreamException: Unable to > > read additional data from client sessionid 0x15bd8bdd3500023, likely > > client has closed socket > > at org.apache.zookeeper.server.NIOServerCnxn.doIO( > > NIOServerCnxn.java:228) > > [zookeeper-3.4.6.jar:3.4.6-1569965] > > at org.apache.zookeeper.server.NIOServerCnxnFactory.run( > > NIOServerCnxnFactory.java:208) > > [zookeeper-3.4.6.jar:3.4.6-1569965] > > at java.lang.Thread.run(Thread.java:745) [?:1.8.0_66-internal] > > 2017-05-05T13:59:52,819 - INFO > > [NIOServerCxn.Factory:0.0.0.0/0.0.0.0:9983:NIOServerCnxn@1007] - > > Closed socket connection for client /127.0.0.1:54200 which had > > sessionid 0x15bd8bdd3500023 > > ... > > > > 2017-05-05T14:00:00,001 - INFO [SessionTracker:ZooKeeperServer@347] - > > Expiring session 0x15bd8bdd3500023, timeout of 10000ms exceeded > > > > On Fri, May 19, 2017 at 9:48 AM, Joel Bernstein <joels...@gmail.com> > > wrote: > > > You get this every time you run the expression? > > > > > > Joel Bernstein > > > http://joelsolr.blogspot.com/ > > > > > > On Fri, May 19, 2017 at 10:44 AM, Timothy Potter <thelabd...@gmail.com > > > > > wrote: > > > > > >> I'm executing a streaming expr and get this error: > > >> > > >> Caused by: org.apache.solr.common.SolrException: Could not load > > >> collection from ZK: > > >> MovieLens_Ratings_f2e6f8b0_3199_11e7_b8ab_0242ac110002 > > >> at org.apache.solr.common.cloud.ZkStateReader. > > getCollectionLive( > > >> ZkStateReader.java:1098) > > >> at org.apache.solr.common.cloud.ZkStateReader$ > > >> LazyCollectionRef.get(ZkStateReader.java:638) > > >> at org.apache.solr.client.solrj.impl.CloudSolrClient. > > >> getDocCollection(CloudSolrClient.java:1482) > > >> at org.apache.solr.client.solrj.impl.CloudSolrClient. > > >> requestWithRetryOnStaleState(CloudSolrClient.java:1092) > > >> at org.apache.solr.client.solrj.impl.CloudSolrClient.request( > > >> CloudSolrClient.java:1057) > > >> at org.apache.solr.client.solrj.io.stream.FacetStream.open( > > >> FacetStream.java:356) > > >> ... 38 more > > >> Caused by: org.apache.zookeeper.KeeperException$ > > SessionExpiredException: > > >> KeeperErrorCode = Session expired for > > >> /collections/MovieLens_Ratings_f2e6f8b0_3199_11e7_ > > >> b8ab_0242ac110002/state.json > > >> at org.apache.zookeeper.KeeperException.create( > > >> KeeperException.java:127) > > >> at org.apache.zookeeper.KeeperException.create( > > >> KeeperException.java:51) > > >> at org.apache.zookeeper.ZooKeeper.getData(ZooKeeper. > java:1155) > > >> at org.apache.solr.common.cloud.SolrZkClient$7.execute( > > >> SolrZkClient.java:356) > > >> at org.apache.solr.common.cloud.SolrZkClient$7.execute( > > >> SolrZkClient.java:353) > > >> at org.apache.solr.common.cloud.ZkCmdExecutor.retryOperation( > > >> ZkCmdExecutor.java:60) > > >> at org.apache.solr.common.cloud.SolrZkClient.getData( > > >> SolrZkClient.java:353) > > >> at org.apache.solr.common.cloud.ZkStateReader. > > >> fetchCollectionState(ZkStateReader.java:1110) > > >> at org.apache.solr.common.cloud.ZkStateReader. > > getCollectionLive( > > >> ZkStateReader.java:1096) > > >> ... 43 more > > >> > > >> I've scoured the GC logs for solr and there are no long pauses > > >> (nothing even over 1 second) ... any ideas why that session could be > > >> expired? > > >> > > >
