[
https://issues.apache.org/jira/browse/SOLR-11484?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Steve Rowe reopened SOLR-11484:
-------------------------------
Reopening to address a 100% reproducing {{CloudSolrClient}} NPE that begins at
commit 59109e1b1 on this issue, from
[https://jenkins.thetaphi.de/job/Lucene-Solr-7.x-Linux/685]:
{noformat}
Checking out Revision 14bb48e3268c8e2f4aa509b1a71a9fb3e361b082
(refs/remotes/origin/branch_7x)
[...]
[junit4] 2> NOTE: reproduce with: ant test -Dtestcase=TestCloudSchemaless
-Dtests.method=test -Dtests.seed=2542B6AD904A6296 -Dtests.multiplier=3
-Dtests.slow=true -Dtests.locale=th-TH-u-nu-thai-x-lvariant-TH
-Dtests.timezone=America/Nipigon -Dtests.asserts=true
-Dtests.file.encoding=ISO-8859-1
[junit4] ERROR 48.2s J0 | TestCloudSchemaless.test <<<
[junit4] > Throwable #1: java.lang.NullPointerException
[junit4] > at
__randomizedtesting.SeedInfo.seed([2542B6AD904A6296:AD1689773EB60F6E]:0)
[junit4] > at
org.apache.solr.client.solrj.impl.CloudSolrClient.requestWithRetryOnStaleState(CloudSolrClient.java:925)
[junit4] > at
org.apache.solr.client.solrj.impl.CloudSolrClient.request(CloudSolrClient.java:808)
[junit4] > at
org.apache.solr.client.solrj.SolrRequest.process(SolrRequest.java:178)
[junit4] > at
org.apache.solr.client.solrj.SolrClient.add(SolrClient.java:106)
[junit4] > at
org.apache.solr.client.solrj.SolrClient.add(SolrClient.java:71)
[junit4] > at
org.apache.solr.client.solrj.SolrClient.add(SolrClient.java:85)
[junit4] > at
org.apache.solr.schema.TestCloudSchemaless.test(TestCloudSchemaless.java:171)
[junit4] > at
org.apache.solr.BaseDistributedSearchTestCase$ShardsRepeatRule$ShardsFixedStatement.callStatement(BaseDistributedSearchTestCase.java:993)
[junit4] > at
org.apache.solr.BaseDistributedSearchTestCase$ShardsRepeatRule$ShardsStatement.evaluate(BaseDistributedSearchTestCase.java:968)
[...]
[junit4] 2> NOTE: test params are: codec=Asserting(Lucene70): {},
docValues:{}, maxPointsInLeafNode=350, maxMBSortInHeap=6.677333545717319,
sim=RandomSimilarity(queryNorm=true): {}, locale=th-TH-u-nu-thai-x-lvariant-TH,
timezone=America/Nipigon
[junit4] 2> NOTE: Linux 4.10.0-33-generic i386/Oracle Corporation
1.8.0_144 (32-bit)/cpus=8,threads=1,free=305236536,total=523501568
{noformat}
> CloudSolrClient's cache of collection clusterstate can cause RouteExceptions
> when attempting directUpdates after collection modifications
> -----------------------------------------------------------------------------------------------------------------------------------------
>
> Key: SOLR-11484
> URL: https://issues.apache.org/jira/browse/SOLR-11484
> Project: Solr
> Issue Type: Bug
> Security Level: Public(Default Security Level. Issues are Public)
> Reporter: Hoss Man
> Assignee: Noble Paul
> Fix For: 7.2, master (8.0)
>
> Attachments: SOLR-11484.patch, SOLR-11484.patch,
> jenkins.thetaphi.20662.txt
>
>
> This was discovered while auditing jenkins failures from
> {{TestCollectionsAPIViaSolrCloudCluster.testCollectionCreateSearchDelete}}
> (where a test explicitly deletes and then recreates a collection with the
> same name), but as noted in a comment below, SOLR-11392 is another example of
> non-obvious test failures that can pop up because of this bug.
> In practice, it can affect any CloudSolrClient user after changes have been
> made to a collection (to add/move replicas, etc...)
> ----
> Original jira notes...
> {{TestCollectionsAPIViaSolrCloudCluster.testCollectionCreateSearchDelete}}
> seems to fail with non-trivial frequency, so I grabbed the logs from a recent
> failure and starting trying to follow along with the actions to figure out
> what exactly is happening....
> https://jenkins.thetaphi.de/job/Lucene-Solr-master-Linux/20662/
> {noformat}
> [junit4] ERROR 20.3s J1 |
> TestCollectionsAPIViaSolrCloudCluster.testCollectionCreateSearchDelete <<<
> [junit4] > Throwable #1:
> org.apache.solr.client.solrj.impl.CloudSolrClient$RouteException: Error from
> server at https://127.0.0.1:42959/solr/testcollection_shard1_replica_n3:
> Expected mime type a
> pplication/octet-stream but got text/html. <html>
> [junit4] > <head>
> [junit4] > <meta http-equiv="Content-Type"
> content="text/html;charset=ISO-8859-1"/>
> [junit4] > <title>Error 404 </title>
> {noformat}
> The crux of this failure appears to be a genuine bug in how CloudSolrClient
> uses it's cached ClusterState info when doing (direct) updates. The key bits
> seem to be:
> * CloudSolrClient does _something_ (update,query,etc...) with a collection
> causing the current cluster state for the collection to be cached
> * The actual collection changes such that a Solr node/core no longer exists
> as part of the collection
> * CloudSolrClient is asked to process an UpdateRequest which triggers the
> code paths for the {{directUpdate()}} method -- which attempts to route the
> updates directly to a replica of the appropriate shard using the (cache)
> collection state info
> * CloudSolrClient (may) attempt to send that UpdateRequest to a node/core
> that doesn't exist, getting a 404 -- which does not (seem to) trigger a state
> refresh, or retry to find a correct URL to resend the update to.
> Details to follow in comment....
--
This message was sent by Atlassian JIRA
(v6.4.14#64029)
---------------------------------------------------------------------
To unsubscribe, e-mail: [email protected]
For additional commands, e-mail: [email protected]
