Steve Rowe created SOLR-9983:
--------------------------------
Summary: TestManagedSchemaThreadSafety.testThreadSafety() failures
Key: SOLR-9983
URL: https://issues.apache.org/jira/browse/SOLR-9983
Project: Solr
Issue Type: Bug
Security Level: Public (Default Security Level. Issues are Public)
Components: Schema and Analysis
Affects Versions: master (7.0)
Reporter: Steve Rowe
I set up a Jenkins job to hammer all tests on the {{jira/solr-5944}} branch,
and at least four times this test failed (none of the seeds reproduce for me):
[http://jenkins.sarowe.net/job/Solr-tests-SOLR-5944/155/],
[http://jenkins.sarowe.net/job/Solr-tests-SOLR-5944/167/],
[http://jenkins.sarowe.net/job/Solr-tests-SOLR-5944/106/],
[http://jenkins.sarowe.net/job/Solr-tests-SOLR-5944/332/]. My email search
didn't turn up any failures on ASF or Policeman Jenkins. Here's the output from
one of the above runs:
{noformat}
[junit4] 2> NOTE: reproduce with: ant test
-Dtestcase=TestManagedSchemaThreadSafety -Dtests.method=testThreadSafety
-Dtests.seed=3DB2B79301AA806B -Dtests.slow=true -Dtests.locale=lt
-Dtests.timezone=Asia/Anadyr -Dtests.asserts=true -Dtests.file.encoding=US-ASCII
[junit4] ERROR 4.37s J4 | TestManagedSchemaThreadSafety.testThreadSafety
<<<
[junit4] > Throwable #1: java.util.concurrent.ExecutionException:
java.lang.RuntimeException: org.apache.solr.common.SolrException: Error loading
solr config from solrconfig.xml
[junit4] > at
__randomizedtesting.SeedInfo.seed([3DB2B79301AA806B:A7F8A3CBD235329D]:0)
[junit4] > at
java.util.concurrent.FutureTask.report(FutureTask.java:122)
[junit4] > at
java.util.concurrent.FutureTask.get(FutureTask.java:192)
[junit4] > at
org.apache.solr.schema.TestManagedSchemaThreadSafety.testThreadSafety(TestManagedSchemaThreadSafety.java:126)
[junit4] > at java.lang.Thread.run(Thread.java:745)
[junit4] > Caused by: java.lang.RuntimeException:
org.apache.solr.common.SolrException: Error loading solr config from
solrconfig.xml
[junit4] > at
org.apache.solr.schema.TestManagedSchemaThreadSafety.lambda$indexSchemaLoader$0(TestManagedSchemaThreadSafety.java:159)
[junit4] > at
java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
[junit4] > at
java.util.concurrent.FutureTask.run(FutureTask.java:266)
[junit4] > at
org.apache.solr.common.util.ExecutorUtil$MDCAwareThreadPoolExecutor.lambda$execute$0(ExecutorUtil.java:229)
[junit4] > at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
[junit4] > at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
[junit4] > ... 1 more
[junit4] > Caused by: org.apache.solr.common.SolrException: Error loading
solr config from solrconfig.xml
[junit4] > at
org.apache.solr.core.SolrConfig.readFromResourceLoader(SolrConfig.java:187)
[junit4] > at
org.apache.solr.schema.TestManagedSchemaThreadSafety.lambda$indexSchemaLoader$0(TestManagedSchemaThreadSafety.java:152)
[junit4] > ... 6 more
[junit4] > Caused by: java.lang.NullPointerException
[junit4] > at
org.apache.solr.cloud.ZkSolrResourceLoader.openResource(ZkSolrResourceLoader.java:99)
[junit4] > at
org.apache.solr.core.SolrResourceLoader.openConfig(SolrResourceLoader.java:361)
[junit4] > at org.apache.solr.core.Config.<init>(Config.java:120)
[junit4] > at org.apache.solr.core.Config.<init>(Config.java:90)
[junit4] > at
org.apache.solr.core.SolrConfig.<init>(SolrConfig.java:202)
[junit4] > at
org.apache.solr.core.SolrConfig.readFromResourceLoader(SolrConfig.java:179)
[junit4] > ... 7 more
{noformat}
Looks to me like this is a test bug: the test mocks {{ZkController}}, but the
mock returns null for (the uninitialized {{cc}} returned by)
{{getCoreContainer()}}, which is called when the ZK session expires in
{{ZkSolrResourceLoader.openResource()}}. The NPE is triggered when
{{isShutdown()}} is called on the null core container:
{code:java|title=ZkSolrResourceLoader.java}
97: } catch (KeeperException.SessionExpiredException e) {
98: exception = e;
99: if (!zkController.getCoreContainer().isShutDown()) {
100: // Retry in case of session expiry
{code}
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