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https://issues.apache.org/jira/browse/SOLR-14463?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17102595#comment-17102595
]
Bernd Wahlen commented on SOLR-14463:
-------------------------------------
Thanks for the quick patch, but when i check the output of 3.5.7 i got:
{code:java}
zk_version 3.5.7-f0fdd52973d373ffd9c86b81d99842dc2c7f660e, built on
02/10/2020 11:30 GMT
zk_avg_latency 0
zk_max_latency 13
zk_min_latency 0
zk_packets_received 324
zk_packets_sent 323
zk_num_alive_connections 2
zk_outstanding_requests 0
zk_server_state leader
zk_znode_count 122
zk_watch_count 5
zk_ephemerals_count 9
zk_approximate_data_size 331461
zk_open_file_descriptor_count 52
zk_max_file_descriptor_count 1048576
zk_followers 2
zk_synced_followers 2
zk_pending_syncs 0
zk_last_proposal_size 92
zk_max_proposal_size 705
zk_min_proposal_size 32
{code}
So i think for 3.6.x your patch is correct, but for 3.5.x it will return 4 (2
zk_followers + 2 zk_synced_followers) instead of 2 in a typical cluster of 3 zk
instances.
> solr admin ui: zkstatus: For input string: "null" with zk 3.6.x
> ---------------------------------------------------------------
>
> Key: SOLR-14463
> URL: https://issues.apache.org/jira/browse/SOLR-14463
> Project: Solr
> Issue Type: Bug
> Security Level: Public(Default Security Level. Issues are Public)
> Affects Versions: 8.5.1
> Reporter: Bernd Wahlen
> Assignee: Jan Høydahl
> Priority: Major
> Time Spent: 10m
> Remaining Estimate: 0h
>
> When i select in solr 8.5.1 webinterface: Cloud - ZK Status i got
> For input string: "null"
> This happens after upgrading the leader to zookeeper 3.6.1 (upgrading the
> followers before was not a problem). From my view configuration is running,
> just the status web page doesn't.
> I remember that there was similar problem before with solr/zk version
> incompatibilities. From zookeeper documentation 3.6.1 should be fully
> compatible with 3.5 clients.
> Annoyingly there is no official zk 3.6.1 docker container available, but i
> think it is easy to reproduce.
> and from solr.log file:
> {code:java}
> 2020-05-07 15:58:33.194 ERROR (qtp1940055334-231) [ ]
> o.a.s.h.RequestHandlerBase java.lang.NumberFormatException: For input string:
> "null"
> at
> java.base/java.lang.NumberFormatException.forInputString(NumberFormatException.java:65)
> at java.base/java.lang.Integer.parseInt(Integer.java:652)
> at java.base/java.lang.Integer.parseInt(Integer.java:770)
> at
> org.apache.solr.handler.admin.ZookeeperStatusHandler.getZkStatus(ZookeeperStatusHandler.java:116)
> at
> org.apache.solr.handler.admin.ZookeeperStatusHandler.handleRequestBody(ZookeeperStatusHandler.java:78)
> at
> org.apache.solr.handler.RequestHandlerBase.handleRequest(RequestHandlerBase.java:211)
> at
> org.apache.solr.servlet.HttpSolrCall.handleAdmin(HttpSolrCall.java:842)
> at
> org.apache.solr.servlet.HttpSolrCall.handleAdminRequest(HttpSolrCall.java:808)
> at org.apache.solr.servlet.HttpSolrCall.call(HttpSolrCall.java:559)
> at
> org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:420)
> at
> org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:352)
> at
> org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1596)
> at
> org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:545)
> at
> org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:143)
> at
> org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:590)
> at
> org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:127)
> at
> org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:235)
> at
> org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:1607)
> at
> org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:233)
> at
> org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1297)
> at
> org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:188)
> at
> org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:485)
> at
> org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:1577)
> at
> org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:186)
> at
> org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1212)
> at
> org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:141)
> at
> org.eclipse.jetty.server.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:221)
> at
> org.eclipse.jetty.server.handler.InetAccessHandler.handle(InetAccessHandler.java:177)
> at
> org.eclipse.jetty.server.handler.HandlerCollection.handle(HandlerCollection.java:146)
> at
> org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:127)
> at
> org.eclipse.jetty.rewrite.handler.RewriteHandler.handle(RewriteHandler.java:322)
> at
> org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:127)
> at org.eclipse.jetty.server.Server.handle(Server.java:500)
> at
> org.eclipse.jetty.server.HttpChannel.lambda$handle$1(HttpChannel.java:383)
> at org.eclipse.jetty.server.HttpChannel.dispatch(HttpChannel.java:547)
> at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:375)
> at
> org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:270)
> at
> org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:311)
> at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:103)
> at
> org.eclipse.jetty.io.ChannelEndPoint$2.run(ChannelEndPoint.java:117)
> at
> org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.runTask(EatWhatYouKill.java:336)
> at
> org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.doProduce(EatWhatYouKill.java:313)
> at
> org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.tryProduce(EatWhatYouKill.java:171)
> at
> org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.run(EatWhatYouKill.java:129)
> at
> org.eclipse.jetty.util.thread.ReservedThreadExecutor$ReservedThread.run(ReservedThreadExecutor.java:388)
> at
> org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:806)
> at
> org.eclipse.jetty.util.thread.QueuedThreadPool$Runner.run(QueuedThreadPool.java:938)
> at java.base/java.lang.Thread.run(Thread.java:834)
> {code}
> Others have the same isues:
> https://www.reddit.com/r/Solr/comments/fld4l6/issue_with_zk_status_page/
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