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https://issues.apache.org/jira/browse/SOLR-3041?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13485005#comment-13485005
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Mark Miller commented on SOLR-3041:
-----------------------------------
The overall issue is pretty much solved by the new zkCli tool I think - you can
just use that to upload your config before starting up.
In terms of being more robust when not using that tool, I guess that is still
something to consider here.
> Solrs using SolrCloud feature for having shared config in ZK, might not all
> start successfully when started for the first time simultaneously
> ---------------------------------------------------------------------------------------------------------------------------------------------
>
> Key: SOLR-3041
> URL: https://issues.apache.org/jira/browse/SOLR-3041
> Project: Solr
> Issue Type: Bug
> Components: SolrCloud
> Affects Versions: 4.0-ALPHA
> Environment: Exact version:
> https://builds.apache.org/job/Solr-trunk/1718/artifact/artifacts/apache-solr-4.0-2011-12-28_08-33-55.tgz
> Reporter: Per Steffensen
> Assignee: Mark Miller
> Fix For: 4.1
>
> Original Estimate: 96h
> Remaining Estimate: 96h
>
> Starting Solr like this
> java -DzkHost=<ZKs> -Dbootstrap_confdir=./myproject/conf
> -Dcollection.configName=myproject_conf -Dsolr.solr.home=./myproject -jar
> start.jar
> When not already there (starting solr for the first time) the content of
> ./myproject/conf will be copied by Solr into ZK. That process does not work
> very well in parallel, so if the content is not there and I start several
> Solrs simultaneously, one or more of them might not start successfully.
> I see exceptions like the ones shown below, and the Solrs throwing them will
> not work correctly afterwards.
> I know that there could be different workarounds, like making sure to always
> start one Solr and wait for a while before starting the rest of them, but I
> think we should really be more robuste in these cases.
> Regards, Per Steffensen
> ---- exception example 1 (the znode causing the problem can be different than
> /configs/myproject_conf/protwords.txt) ----
> org.apache.solr.common.cloud.ZooKeeperException:
> at
> org.apache.solr.core.CoreContainer.initZooKeeper(CoreContainer.java:193)
> at org.apache.solr.core.CoreContainer.load(CoreContainer.java:337)
> at org.apache.solr.core.CoreContainer.load(CoreContainer.java:294)
> at
> org.apache.solr.core.CoreContainer$Initializer.initialize(CoreContainer.java:240)
> at
> org.apache.solr.servlet.SolrDispatchFilter.init(SolrDispatchFilter.java:93)
> at org.mortbay.jetty.servlet.FilterHolder.doStart(FilterHolder.java:97)
> at
> org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:50)
> at
> org.mortbay.jetty.servlet.ServletHandler.initialize(ServletHandler.java:713)
> at org.mortbay.jetty.servlet.Context.startContext(Context.java:140)
> at
> org.mortbay.jetty.webapp.WebAppContext.startContext(WebAppContext.java:1282)
> at
> org.mortbay.jetty.handler.ContextHandler.doStart(ContextHandler.java:518)
> at
> org.mortbay.jetty.webapp.WebAppContext.doStart(WebAppContext.java:499)
> at
> org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:50)
> at
> org.mortbay.jetty.handler.HandlerCollection.doStart(HandlerCollection.java:152)
> at
> org.mortbay.jetty.handler.ContextHandlerCollection.doStart(ContextHandlerCollection.java:156)
> at
> org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:50)
> at
> org.mortbay.jetty.handler.HandlerCollection.doStart(HandlerCollection.java:152)
> at
> org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:50)
> at
> org.mortbay.jetty.handler.HandlerWrapper.doStart(HandlerWrapper.java:130)
> at org.mortbay.jetty.Server.doStart(Server.java:224)
> at
> org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:50)
> at org.mortbay.xml.XmlConfiguration.main(XmlConfiguration.java:985)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
> at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
> at java.lang.reflect.Method.invoke(Method.java:597)
> at org.mortbay.start.Main.invokeMain(Main.java:194)
> at org.mortbay.start.Main.start(Main.java:534)
> at org.mortbay.start.Main.start(Main.java:441)
> at org.mortbay.start.Main.main(Main.java:119)
> Caused by: org.apache.zookeeper.KeeperException$NodeExistsException:
> KeeperErrorCode = NodeExists for /configs/myproject_conf/protwords.txt
> at org.apache.zookeeper.KeeperException.create(KeeperException.java:110)
> at org.apache.zookeeper.KeeperException.create(KeeperException.java:42)
> at org.apache.zookeeper.ZooKeeper.create(ZooKeeper.java:637)
> at
> org.apache.solr.common.cloud.SolrZkClient.makePath(SolrZkClient.java:347)
> at
> org.apache.solr.common.cloud.SolrZkClient.makePath(SolrZkClient.java:308)
> at
> org.apache.solr.common.cloud.SolrZkClient.makePath(SolrZkClient.java:290)
> at
> org.apache.solr.common.cloud.SolrZkClient.makePath(SolrZkClient.java:255)
> at
> org.apache.solr.common.cloud.SolrZkClient.setData(SolrZkClient.java:384)
> at
> org.apache.solr.common.cloud.SolrZkClient.setData(SolrZkClient.java:410)
> at org.apache.solr.cloud.ZkController.uploadToZK(ZkController.java:520)
> at
> org.apache.solr.cloud.ZkController.uploadConfigDir(ZkController.java:536)
> at
> org.apache.solr.core.CoreContainer.initZooKeeper(CoreContainer.java:175)
> ... 29 more
> ---- exception example 2 ----
> org.apache.solr.common.cloud.ZooKeeperException:
> at org.apache.solr.core.CoreContainer.register(CoreContainer.java:526)
> at org.apache.solr.core.CoreContainer.load(CoreContainer.java:410)
> at org.apache.solr.core.CoreContainer.load(CoreContainer.java:294)
> at
> org.apache.solr.core.CoreContainer$Initializer.initialize(CoreContainer.java:240)
> at
> org.apache.solr.servlet.SolrDispatchFilter.init(SolrDispatchFilter.java:93)
> at org.mortbay.jetty.servlet.FilterHolder.doStart(FilterHolder.java:97)
> at
> org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:50)
> at
> org.mortbay.jetty.servlet.ServletHandler.initialize(ServletHandler.java:713)
> at org.mortbay.jetty.servlet.Context.startContext(Context.java:140)
> at
> org.mortbay.jetty.webapp.WebAppContext.startContext(WebAppContext.java:1282)
> at
> org.mortbay.jetty.handler.ContextHandler.doStart(ContextHandler.java:518)
> at
> org.mortbay.jetty.webapp.WebAppContext.doStart(WebAppContext.java:499)
> at
> org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:50)
> at
> org.mortbay.jetty.handler.HandlerCollection.doStart(HandlerCollection.java:152)
> at
> org.mortbay.jetty.handler.ContextHandlerCollection.doStart(ContextHandlerCollection.java:156)
> at
> org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:50)
> at
> org.mortbay.jetty.handler.HandlerCollection.doStart(HandlerCollection.java:152)
> at
> org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:50)
> at
> org.mortbay.jetty.handler.HandlerWrapper.doStart(HandlerWrapper.java:130)
> at org.mortbay.jetty.Server.doStart(Server.java:224)
> at
> org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:50)
> at org.mortbay.xml.XmlConfiguration.main(XmlConfiguration.java:985)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
> at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
> at java.lang.reflect.Method.invoke(Method.java:597)
> at org.mortbay.start.Main.invokeMain(Main.java:194)
> at org.mortbay.start.Main.start(Main.java:534)
> at org.mortbay.start.Main.start(Main.java:441)
> at org.mortbay.start.Main.main(Main.java:119)
> Caused by: org.apache.zookeeper.KeeperException$NoNodeException:
> KeeperErrorCode = NoNode for
> /collections/myproject_collection/shards/shard1/192.168.98.1:8983_myproject_collection_shard1
> at org.apache.zookeeper.KeeperException.create(KeeperException.java:102)
> at org.apache.zookeeper.KeeperException.create(KeeperException.java:42)
> at org.apache.zookeeper.ZooKeeper.create(ZooKeeper.java:637)
> at
> org.apache.solr.common.cloud.SolrZkClient.create(SolrZkClient.java:238)
> at org.apache.solr.cloud.ZkController.register(ZkController.java:483)
> at org.apache.solr.core.CoreContainer.register(CoreContainer.java:517)
> ... 29 more
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