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From Bar Weiner <weiner....@gmail.com>
Subject Information regarding "This conf directory is not valid" SolrException.
Date Wed, 01 Apr 2015 15:16:39 GMT
Hi,

I'm working on upgrading a project from solr-4.10.3 to solr-5.0.0.
As part of our JUnit tests we have a few tests for deleting/creating
collections. Each test create&delete a collection with a different name,
but they all share the same config in ZK.
When running these tests in Eclipse everything works fine, but when running
the same tests through Maven we get the following error so I suspect this
is a timing related issue :

INFO  org.apache.solr.rest.ManagedResourceStorage  – Setting up
ZooKeeper-based storage for the RestManager with znodeBase:
/configs/SIMPLE_CONFIG
INFO  org.apache.solr.rest.ManagedResourceStorage  – Configured
ZooKeeperStorageIO with znodeBase: /configs/SIMPLE_CONFIG
INFO  org.apache.solr.rest.RestManager  – Initializing RestManager with
initArgs: {}
INFO  org.apache.solr.rest.ManagedResourceStorage  – Reading
_rest_managed.json using ZooKeeperStorageIO:path=/configs/SIMPLE_CONFIG
INFO  org.apache.solr.rest.ManagedResourceStorage  – No data found for
znode /configs/SIMPLE_CONFIG/_rest_managed.json
INFO  org.apache.solr.rest.ManagedResourceStorage  – Loaded null at path
_rest_managed.json using ZooKeeperStorageIO:path=/configs/SIMPLE_CONFIG
INFO  org.apache.solr.rest.RestManager  – Initializing 0 registered
ManagedResources
INFO  org.apache.solr.handler.ReplicationHandler  – Commits will be
reserved for  10000
INFO  org.apache.solr.core.SolrCore  – [mycollection1] Registered new
searcher Searcher@3208a6c4[mycollection1]
main{ExitableDirectoryReader(UninvertingDirectoryReader())}
ERROR org.apache.solr.core.CoreContainer  – Error creating core
[mycollection1]: This conf directory is not valid
org.apache.solr.common.SolrException: This conf directory is not valid
        at
org.apache.solr.cloud.ZkController.registerConfListenerForCore(ZkController.java:2229)
        at
org.apache.solr.core.SolrCore.registerConfListener(SolrCore.java:2633)
        at org.apache.solr.core.SolrCore.<init>(SolrCore.java:936)
        at org.apache.solr.core.SolrCore.<init>(SolrCore.java:662)
        at org.apache.solr.core.CoreContainer.create(CoreContainer.java:513)
        at org.apache.solr.core.CoreContainer.create(CoreContainer.java:488)
        at
org.apache.solr.handler.admin.CoreAdminHandler.handleCreateAction(CoreAdminHandler.java:573)
        at
org.apache.solr.handler.admin.CoreAdminHandler.handleRequestInternal(CoreAdminHandler.java:197)
        at
org.apache.solr.handler.admin.CoreAdminHandler.handleRequestBody(CoreAdminHandler.java:186)
        at
org.apache.solr.handler.RequestHandlerBase.handleRequest(RequestHandlerBase.java:144)
        at
org.apache.solr.servlet.SolrDispatchFilter.handleAdminRequest(SolrDispatchFilter.java:736)
        at
org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:261)
        at
org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:204)
        at
org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1419)
        at
org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:455)
        at
org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:137)
        at
org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:557)
        at
org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:231)
        at
org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1075)
        at
org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:384)
        at
org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:193)
        at
org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1009)
        at
org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:135)
        at
org.eclipse.jetty.server.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:255)
        at
org.eclipse.jetty.server.handler.HandlerCollection.handle(HandlerCollection.java:154)
        at
org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:116)
        at org.eclipse.jetty.server.Server.handle(Server.java:368)
        at
org.eclipse.jetty.server.AbstractHttpConnection.handleRequest(AbstractHttpConnection.java:489)
        at
org.eclipse.jetty.server.BlockingHttpConnection.handleRequest(BlockingHttpConnection.java:53)
        at
org.eclipse.jetty.server.AbstractHttpConnection.content(AbstractHttpConnection.java:953)
        at
org.eclipse.jetty.server.AbstractHttpConnection$RequestHandler.content(AbstractHttpConnection.java:1014)
        at org.eclipse.jetty.http.HttpParser.parseNext(HttpParser.java:861)
        at
org.eclipse.jetty.http.HttpParser.parseAvailable(HttpParser.java:240)
        at
org.eclipse.jetty.server.BlockingHttpConnection.handle(BlockingHttpConnection.java:72)
        at
org.eclipse.jetty.server.bio.SocketConnector$ConnectorEndPoint.run(SocketConnector.java:264)
        at
org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:608)
        at
org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:543)
        at java.lang.Thread.run(Thread.java:722)

In summary, my question is what is the meaning of this exception and what
are the possible causes of it. I am sure the config directory I'm using is
still in ZK and its not deleted during the test.

Thanks,
Bar

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