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https://issues.apache.org/jira/browse/SOLR-5474?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13979200#comment-13979200
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Mark Miller commented on SOLR-5474:
-----------------------------------
Attached is a test fail for this.
{noformat}
org.apache.solr.client.solrj.SolrServerException:
org.apache.solr.client.solrj.impl.HttpSolrServer$RemoteSolrException: STATE
STALE: collection1:15valid : false
at
__randomizedtesting.SeedInfo.seed([170B85B5FF6722D6:96ED0BAD883842EA]:0)
at
org.apache.solr.client.solrj.impl.CloudSolrServer.requestWithRetryOnStaleState(CloudSolrServer.java:683)
at
org.apache.solr.client.solrj.impl.CloudSolrServer.requestWithRetryOnStaleState(CloudSolrServer.java:676)
at
org.apache.solr.client.solrj.impl.CloudSolrServer.request(CloudSolrServer.java:556)
at
org.apache.solr.client.solrj.request.QueryRequest.process(QueryRequest.java:91)
at org.apache.solr.client.solrj.SolrServer.query(SolrServer.java:301)
at
org.apache.solr.cloud.AbstractFullDistribZkTestBase.queryServer(AbstractFullDistribZkTestBase.java:1292)
at
org.apache.solr.BaseDistributedSearchTestCase.query(BaseDistributedSearchTestCase.java:558)
at
org.apache.solr.BaseDistributedSearchTestCase.query(BaseDistributedSearchTestCase.java:540)
at
org.apache.solr.BaseDistributedSearchTestCase.query(BaseDistributedSearchTestCase.java:519)
at
org.apache.solr.cloud.BasicDistributedZk2Test.brindDownShardIndexSomeDocsAndRecover(BasicDistributedZk2Test.java:291)
at
org.apache.solr.cloud.BasicDistributedZk2Test.doTest(BasicDistributedZk2Test.java:109)
at
org.apache.solr.BaseDistributedSearchTestCase.testDistribSearch(BaseDistributedSearchTestCase.java:865)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
{noformat}
> Have a new mode for SolrJ to support stateFormat=2
> --------------------------------------------------
>
> Key: SOLR-5474
> URL: https://issues.apache.org/jira/browse/SOLR-5474
> Project: Solr
> Issue Type: Sub-task
> Components: SolrCloud
> Reporter: Noble Paul
> Assignee: Noble Paul
> Fix For: 5.0
>
> Attachments: SOLR-5474.patch, SOLR-5474.patch, SOLR-5474.patch,
> fail.logs
>
>
> In this mode SolrJ would not watch any ZK node
> It fetches the state on demand and cache the most recently used n
> collections in memory.
> SolrJ would not listen to any ZK node. When a request comes for a collection
> ‘xcoll’
> it would first check if such a collection exists
> If yes it first looks up the details in the local cache for that collection
> If not found in cache , it fetches the node /collections/xcoll/state.json and
> caches the information
> Any query/update will be sent with extra query param specifying the
> collection name , version (example \_stateVer=xcoll:34) . A node would throw
> an error (INVALID_NODE) if it does not have the right version
> If SolrJ gets INVALID_NODE error it would invalidate the cache and fetch
> fresh state information for that collection (and caches it again)
> If there is a connection timeout, SolrJ assumes the node is down and re-fetch
> the state for the collection and try again
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