[ 
https://issues.apache.org/jira/browse/SOLR-10588?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15990190#comment-15990190
 ] 

Mikhail Khludnev edited comment on SOLR-10588 at 4/30/17 10:53 AM:
-------------------------------------------------------------------

{code}
   [junit4]   2> org.apache.solr.common.SolrException: Unable to reload core 
[gettingstarted_shard1_replica2]
   [junit4]   2>        at 
org.apache.solr.core.CoreContainer.reload(CoreContainer.java:1197)
   [junit4]   2>        at 
org.apache.solr.core.SolrCore.lambda$getConfListener$18(SolrCore.java:2949)
   [junit4]   2>        at 
org.apache.solr.handler.SolrConfigHandler$Command.lambda$handleGET$0(SolrConfigHandler.java:225)
   [junit4]   2>        at java.lang.Thread.run(Thread.java:745)
   [junit4]   2> Caused by: java.lang.NullPointerException
   [junit4]   2>        at 
org.apache.solr.metrics.SolrMetricManager.loadShardReporters(SolrMetricManager.java:1032)
   [junit4]   2>        at 
org.apache.solr.metrics.SolrCoreMetricManager.loadReporters(SolrCoreMetricManager.java:89)
   [junit4]   2>        at 
org.apache.solr.core.SolrCore.<init>(SolrCore.java:896)
   [junit4]   2>        at 
org.apache.solr.core.SolrCore.reload(SolrCore.java:647)
   [junit4]   2>        at 
org.apache.solr.core.CoreContainer.reload(CoreContainer.java:1184)
   [junit4]   2>        ... 3 more
   [junit4]   2> 1614982 INFO  (Solr

{code}
and this is another one 
{code}
   [junit4]   2> 1614982 ERROR (SolrConfigHandler-refreshconf) 
[n:127.0.0.1:49705_ c:gettingstarted s:shard1 r:core_node4 
x:gettingstarted_shard1_replica2] o.a.s.h.SolrConfigHandler Unable to refresh 
conf 
   [junit4]   2> org.apache.solr.common.SolrException: Unable to reload core 
[gettingstarted_shard1_replica2]
   [junit4]   2>        at 
org.apache.solr.core.CoreContainer.reload(CoreContainer.java:1197)
   [junit4]   2>        at 
org.apache.solr.core.SolrCore.lambda$getConfListener$18(SolrCore.java:2949)
   [junit4]   2>        at 
org.apache.solr.handler.SolrConfigHandler$Command.lambda$handleGET$0(SolrConfigHandler.java:225)
   [junit4]   2>        at java.lang.Thread.run(Thread.java:745)
   [junit4]   2> Caused by: java.lang.NullPointerException
   [junit4]   2>        at 
org.apache.solr.metrics.SolrMetricManager.loadShardReporters(SolrMetricManager.java:1032)
   [junit4]   2>        at 
org.apache.solr.metrics.SolrCoreMetricManager.loadReporters(SolrCoreMetricManager.java:89)
   [junit4]   2>        at 
org.apache.solr.core.SolrCore.<init>(SolrCore.java:896)
   [junit4]   2>        at 
org.apache.solr.core.SolrCore.reload(SolrCore.java:647)
   [junit4]   2>        at 
org.apache.solr.core.CoreContainer.reload(CoreContainer.java:1184)
   [junit4]   2>        ... 3 more
   [junit4]   2> 1614982 INFO  (SolrConfigHandler-refreshconf) 
[n:127.0.0.1:57043_ c:gettingstarted s:shard1 r:core_node3 
x:gettingstarted_shard1_replica1] o.a.s.m.SolrMetricManager Closing metric 
reporters for registry=solr.core.gettingstarted.shard1.replica1, tag=1820687374
   [junit4]   2> 1614982 INFO  (SolrConfigHandler-refreshconf) 
[n:127.0.0.1:57043_ c:gettingstarted s:shard1 r:core_node3 
x:gettingstarted_shard1_replica1] o.a.s.m.SolrMetricManager Closing metric 
reporters for registry=solr.collection.gettingstarted.shard1.leader, 
tag=1820687374
   [junit4]   2> 1614983 ERROR (SolrConfigHandler-refreshconf) 
[n:127.0.0.1:57043_ c:gettingstarted s:shard1 r:core_node3 
x:gettingstarted_shard1_replica1] o.a.s.h.SolrConfigHandler Unable to refresh 
conf 
   [junit4]   2> org.apache.solr.common.SolrException: Unable to reload core 
[gettingstarted_shard1_replica1]
   [junit4]   2>        at 
org.apache.solr.core.CoreContainer.reload(CoreContainer.java:1197)
   [junit4]   2>        at 
org.apache.solr.core.SolrCore.lambda$getConfListener$18(SolrCore.java:2949)
   [junit4]   2>        at 
org.apache.solr.handler.SolrConfigHandler$Command.lambda$handleGET$0(SolrConfigHandler.java:225)
   [junit4]   2>        at java.lang.Thread.run(Thread.java:745)
   [junit4]   2> Caused by: org.apache.solr.common.SolrException
   [junit4]   2>        at 
org.apache.solr.core.SolrCore.<init>(SolrCore.java:1001)
   [junit4]   2>        at 
org.apache.solr.core.SolrCore.reload(SolrCore.java:647)
   [junit4]   2>        at 
org.apache.solr.core.CoreContainer.reload(CoreContainer.java:1184)
   [junit4]   2>        ... 3 more
   [junit4]   2> Caused by: java.lang.NullPointerException
   [junit4]   2>        at 
org.apache.solr.core.SolrCore.initRestManager(SolrCore.java:2779)
   [junit4]   2>        at 
org.apache.solr.core.SolrCore.<init>(SolrCore.java:976)
   [junit4]   2>        ... 5 more
   [junit4]   2> 1615009 INFO  (SolrConfigHandler-refreshconf) 
[n:127.0.0.1:56894_ c:gettingstarted s:shard2 r:core_node1 
x:gettingstarted_shard2_replica2] o.a.s.c.CoreContainer Reloading SolrCore 
'gettingstarted_shard2_replica2' using configuration from collection 
gettingstarted
{code}



was (Author: mkhludnev):
{code}
   [junit4]   2> 1614982 ERROR (SolrConfigHandler-refreshconf) 
[n:127.0.0.1:49705_ c:gettingstarted s:shard1 r:core_node4 
x:gettingstarted_shard1_replica2] o.a.s.h.SolrConfigHandler Unable to refresh 
conf 
   [junit4]   2> org.apache.solr.common.SolrException: Unable to reload core 
[gettingstarted_shard1_replica2]
   [junit4]   2>        at 
org.apache.solr.core.CoreContainer.reload(CoreContainer.java:1197)
   [junit4]   2>        at 
org.apache.solr.core.SolrCore.lambda$getConfListener$18(SolrCore.java:2949)
   [junit4]   2>        at 
org.apache.solr.handler.SolrConfigHandler$Command.lambda$handleGET$0(SolrConfigHandler.java:225)
   [junit4]   2>        at java.lang.Thread.run(Thread.java:745)
   [junit4]   2> Caused by: java.lang.NullPointerException
   [junit4]   2>        at 
org.apache.solr.metrics.SolrMetricManager.loadShardReporters(SolrMetricManager.java:1032)
   [junit4]   2>        at 
org.apache.solr.metrics.SolrCoreMetricManager.loadReporters(SolrCoreMetricManager.java:89)
   [junit4]   2>        at 
org.apache.solr.core.SolrCore.<init>(SolrCore.java:896)
   [junit4]   2>        at 
org.apache.solr.core.SolrCore.reload(SolrCore.java:647)
   [junit4]   2>        at 
org.apache.solr.core.CoreContainer.reload(CoreContainer.java:1184)
   [junit4]   2>        ... 3 more
   [junit4]   2> 1614982 INFO  (SolrConfigHandler-refreshconf) 
[n:127.0.0.1:57043_ c:gettingstarted s:shard1 r:core_node3 
x:gettingstarted_shard1_replica1] o.a.s.m.SolrMetricManager Closing metric 
reporters for registry=solr.core.gettingstarted.shard1.replica1, tag=1820687374
   [junit4]   2> 1614982 INFO  (SolrConfigHandler-refreshconf) 
[n:127.0.0.1:57043_ c:gettingstarted s:shard1 r:core_node3 
x:gettingstarted_shard1_replica1] o.a.s.m.SolrMetricManager Closing metric 
reporters for registry=solr.collection.gettingstarted.shard1.leader, 
tag=1820687374
   [junit4]   2> 1614983 ERROR (SolrConfigHandler-refreshconf) 
[n:127.0.0.1:57043_ c:gettingstarted s:shard1 r:core_node3 
x:gettingstarted_shard1_replica1] o.a.s.h.SolrConfigHandler Unable to refresh 
conf 
   [junit4]   2> org.apache.solr.common.SolrException: Unable to reload core 
[gettingstarted_shard1_replica1]
   [junit4]   2>        at 
org.apache.solr.core.CoreContainer.reload(CoreContainer.java:1197)
   [junit4]   2>        at 
org.apache.solr.core.SolrCore.lambda$getConfListener$18(SolrCore.java:2949)
   [junit4]   2>        at 
org.apache.solr.handler.SolrConfigHandler$Command.lambda$handleGET$0(SolrConfigHandler.java:225)
   [junit4]   2>        at java.lang.Thread.run(Thread.java:745)
   [junit4]   2> Caused by: org.apache.solr.common.SolrException
   [junit4]   2>        at 
org.apache.solr.core.SolrCore.<init>(SolrCore.java:1001)
   [junit4]   2>        at 
org.apache.solr.core.SolrCore.reload(SolrCore.java:647)
   [junit4]   2>        at 
org.apache.solr.core.CoreContainer.reload(CoreContainer.java:1184)
   [junit4]   2>        ... 3 more
   [junit4]   2> Caused by: java.lang.NullPointerException
   [junit4]   2>        at 
org.apache.solr.core.SolrCore.initRestManager(SolrCore.java:2779)
   [junit4]   2>        at 
org.apache.solr.core.SolrCore.<init>(SolrCore.java:976)
   [junit4]   2>        ... 5 more
   [junit4]   2> 1615009 INFO  (SolrConfigHandler-refreshconf) 
[n:127.0.0.1:56894_ c:gettingstarted s:shard2 r:core_node1 
x:gettingstarted_shard2_replica2] o.a.s.c.CoreContainer Reloading SolrCore 
'gettingstarted_shard2_replica2' using configuration from collection 
gettingstarted
{code}


> SolrCloudExampleTest.testLoadDocsIntoGettingStartedCollection failure caused 
> by NullPointerException at SolrMetricManager.loadShardReporters
> --------------------------------------------------------------------------------------------------------------------------------------------
>
>                 Key: SOLR-10588
>                 URL: https://issues.apache.org/jira/browse/SOLR-10588
>             Project: Solr
>          Issue Type: Bug
>      Security Level: Public(Default Security Level. Issues are Public) 
>            Reporter: Mikhail Khludnev
>         Attachments: consoleFull.html.zip
>
>
> https://builds.apache.org/job/Lucene-Solr-Tests-master/1788/testReport/junit/junit.framework/TestSuite/org_apache_solr_cloud_SolrCloudExampleTest/
> this NPE, even it might be quite reasonable itself, breaks core reload, and 
> applying config param. I'm -not- sure, -how- it -'s related- causes to these 
> constant failures.



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