[
https://issues.apache.org/jira/browse/SOLR-6941?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14271632#comment-14271632
]
Mark Miller commented on SOLR-6941:
-----------------------------------
{noformat}
[junit4] ERROR 81.9s J0 | TestRebalanceLeaders.testDistribSearch <<<
[junit4] > Throwable #1:
org.apache.solr.client.solrj.SolrServerException: No live SolrServers available
to handle this request:[http://127.0.0.1:33947/_d/iz,
http://127.0.0.1:41117/_d/iz, http://127.0.0.1:33021/_d/iz,
http://127.0.0.1:44859/_d/iz, http://127.0.0.1:46670/_d/iz]
[junit4] > at
__randomizedtesting.SeedInfo.seed([9EE8FA44BCDCD049:1F0E745CCB83B075]:0)
[junit4] > at
org.apache.solr.client.solrj.impl.LBHttpSolrClient.request(LBHttpSolrClient.java:332)
[junit4] > at
org.apache.solr.client.solrj.impl.CloudSolrClient.sendRequest(CloudSolrClient.java:1015)
[junit4] > at
org.apache.solr.client.solrj.impl.CloudSolrClient.requestWithRetryOnStaleState(CloudSolrClient.java:793)
[junit4] > at
org.apache.solr.client.solrj.impl.CloudSolrClient.request(CloudSolrClient.java:736)
[junit4] > at
org.apache.solr.cloud.TestRebalanceLeaders.issueCommands(TestRebalanceLeaders.java:292)
[junit4] > at
org.apache.solr.cloud.TestRebalanceLeaders.rebalanceLeaderTest(TestRebalanceLeaders.java:119)
[junit4] > at
org.apache.solr.cloud.TestRebalanceLeaders.doTest(TestRebalanceLeaders.java:85)
[junit4] > at
org.apache.solr.BaseDistributedSearchTestCase.testDistribSearch(BaseDistributedSearchTestCase.java:868)
[junit4] > at java.lang.Thread.run(Thread.java:745)
[junit4] > Caused by:
org.apache.solr.client.solrj.impl.HttpSolrClient$RemoteSolrException: Error
from server at http://127.0.0.1:41117/_d/iz: java.lang.NullPointerException
[junit4] > at
org.apache.solr.common.cloud.ZkStateReader.fromJSON(ZkStateReader.java:140)
[junit4] > at
org.apache.solr.common.cloud.ZkNodeProps.load(ZkNodeProps.java:92)
[junit4] > at
org.apache.solr.cloud.DistributedQueue.containsTaskWithRequestId(DistributedQueue.java:125)
[junit4] > at
org.apache.solr.handler.admin.CollectionsHandler.overseerCollectionQueueContains(CollectionsHandler.java:688)
[junit4] > at
org.apache.solr.handler.admin.CollectionsHandler.handleResponse(CollectionsHandler.java:713)
[junit4] > at
org.apache.solr.handler.admin.CollectionsHandler.handleResponse(CollectionsHandler.java:693)
[junit4] > at
org.apache.solr.handler.admin.CollectionsHandler.rejoinElection(CollectionsHandler.java:488)
[junit4] > at
org.apache.solr.handler.admin.CollectionsHandler.insurePreferredIsLeader(CollectionsHandler.java:403)
[junit4] > at
org.apache.solr.handler.admin.CollectionsHandler.handleBalanceLeaders(CollectionsHandler.java:310)
[junit4] > at
org.apache.solr.handler.admin.CollectionsHandler.handleRequestBody(CollectionsHandler.java:276)
[junit4] > at
org.apache.solr.handler.RequestHandlerBase.handleRequest(RequestHandlerBase.java:144)
[junit4] > at
org.apache.solr.servlet.SolrDispatchFilter.handleAdminRequest(SolrDispatchFilter.java:740)
[junit4] > at
org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:266)
[junit4] > at
org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:204)
[junit4] > at
org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1652)
[junit4] > at
org.apache.solr.client.solrj.embedded.JettySolrRunner$DebugFilter.doFilter(JettySolrRunner.java:138)
[junit4] > at
org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1652)
[junit4] > at
org.eclipse.jetty.servlets.UserAgentFilter.doFilter(UserAgentFilter.java:83)
[junit4] > at
org.eclipse.jetty.servlets.GzipFilter.doFilter(GzipFilter.java:364)
[junit4] > at
org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1652)
[junit4] > at
org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:585)
[junit4] > at
org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:221)
[junit4] > at
org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1125)
[junit4] > at
org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:515)
[junit4] > at
org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:185)
[junit4] > at
org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1059)
[junit4] > at
org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:141)
[junit4] > at
org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:97)
[junit4] > at
org.eclipse.jetty.server.Server.handle(Server.java:497)
[junit4] > at
org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:313)
[junit4] > at
org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:248)
[junit4] > at
org.eclipse.jetty.io.AbstractConnection$2.run(AbstractConnection.java:540)
[junit4] > at
org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:626)
[junit4] > at
org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:546)
[junit4] > at java.lang.Thread.run(Thread.java:745)
[junit4] > at
org.apache.solr.client.solrj.impl.HttpSolrClient.executeMethod(HttpSolrClient.java:558)
[junit4] > at
org.apache.solr.client.solrj.impl.HttpSolrClient.request(HttpSolrClient.java:214)
[junit4] > at
org.apache.solr.client.solrj.impl.HttpSolrClient.request(HttpSolrClient.java:210)
[junit4] > at
org.apache.solr.client.solrj.impl.LBHttpSolrClient.doRequest(LBHttpSolrClient.java:353)
[junit4] > at
org.apache.solr.client.solrj.impl.LBHttpSolrClient.request(LBHttpSolrClient.java:321)
[junit4] > ... 47 more
{noformat}
> DistributedQueue#containsTaskWithRequestId can fail with NPE.
> -------------------------------------------------------------
>
> Key: SOLR-6941
> URL: https://issues.apache.org/jira/browse/SOLR-6941
> Project: Solr
> Issue Type: Bug
> Reporter: Mark Miller
> Priority: Minor
> Fix For: 5.0, Trunk
>
> Attachments: SOLR-6941.patch
>
>
> I've seen this happen some recently. Seems data can be return as null and we
> need to guard against it.
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