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Date: Tue, 4 Apr 2017 11:11:41 +0000 (UTC)
From: "Andrew Efimov (JIRA)" <jira@apache.org>
To: commits@cassandra.apache.org
Message-ID: <JIRA.13056967.1489749307000.199994.1491304301598@Atlassian.JIRA>
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References: <JIRA.13056967.1489749307000@Atlassian.JIRA> <JIRA.13056967.1489749307360@jira-lw-us.apache.org>
Subject: [jira] [Commented] (CASSANDRA-13346) Failed unregistering mbean
 during drop keyspace
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archived-at: Tue, 04 Apr 2017 11:11:46 -0000


    [ https://issues.apache.org/jira/browse/CASSANDRA-13346?page=3Dcom.atla=
ssian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=
=3D15955004#comment-15955004 ]=20

Andrew Efimov commented on CASSANDRA-13346:
-------------------------------------------

{{TableMetrics.release}} does not release metric with name {{ViewReadTime}}
because it is not created, but release method tries to remove this metric w=
ith NPE:
{noformat}
org.apache.cassandra.metrics.TableMetrics: 669

        // We do not want to capture view mutation specific metrics for a v=
iew
        // They only makes sense to capture on the base table
        if (cfs.metadata.isView())
        {
            viewLockAcquireTime =3D null;
            viewReadTime =3D null;
        }
        else
        {
            viewLockAcquireTime =3D createTableTimer("ViewLockAcquireTime",=
 cfs.keyspace.metric.viewLockAcquireTime);
            viewReadTime =3D createTableTimer("ViewReadTime", cfs.keyspace.=
metric.viewReadTime);
        }
{noformat}

> Failed unregistering mbean during drop keyspace
> -----------------------------------------------
>
>                 Key: CASSANDRA-13346
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-1334=
6
>             Project: Cassandra
>          Issue Type: Bug
>          Components: Materialized Views
>         Environment: Cassandra 3.9
>            Reporter: G=C3=A1bor Auth
>            Priority: Minor
>              Labels: lhf
>
> All node throw exceptions about materialized views during drop keyspace:
> {code}
> WARN  [MigrationStage:1] 2017-03-16 16:54:25,016 ColumnFamilyStore.java:5=
35 - Failed unregistering mbean: org.apache.cassandra.db:type=3DTables,keys=
pace=3Dtest20160810,table=3Dunit_by_account
> java.lang.NullPointerException: null
>         at java.util.concurrent.ConcurrentHashMap.replaceNode(ConcurrentH=
ashMap.java:1106) ~[na:1.8.0_121]
>         at java.util.concurrent.ConcurrentHashMap.remove(ConcurrentHashMa=
p.java:1097) ~[na:1.8.0_121]
>         at java.util.concurrent.ConcurrentHashMap$KeySetView.remove(Concu=
rrentHashMap.java:4569) ~[na:1.8.0_121]
>         at org.apache.cassandra.metrics.TableMetrics.release(TableMetrics=
.java:712) ~[apache-cassandra-3.9.0.jar:3.9.0]
>         at org.apache.cassandra.db.ColumnFamilyStore.unregisterMBean(Colu=
mnFamilyStore.java:570) [apache-cassandra-3.9.0.jar:3.9.0]
>         at org.apache.cassandra.db.ColumnFamilyStore.invalidate(ColumnFam=
ilyStore.java:527) [apache-cassandra-3.9.0.jar:3.9.0]
>         at org.apache.cassandra.db.ColumnFamilyStore.invalidate(ColumnFam=
ilyStore.java:517) [apache-cassandra-3.9.0.jar:3.9.0]
>         at org.apache.cassandra.db.Keyspace.unloadCf(Keyspace.java:365) [=
apache-cassandra-3.9.0.jar:3.9.0]
>         at org.apache.cassandra.db.Keyspace.dropCf(Keyspace.java:358) [ap=
ache-cassandra-3.9.0.jar:3.9.0]
>         at org.apache.cassandra.config.Schema.dropView(Schema.java:744) [=
apache-cassandra-3.9.0.jar:3.9.0]
>         at org.apache.cassandra.schema.SchemaKeyspace.lambda$mergeSchema$=
373(SchemaKeyspace.java:1287) [apache-cassandra-3.9.0.jar:3.9.0]
>         at java.lang.Iterable.forEach(Iterable.java:75) ~[na:1.8.0_121]
>         at org.apache.cassandra.schema.SchemaKeyspace.mergeSchema(SchemaK=
eyspace.java:1287) [apache-cassandra-3.9.0.jar:3.9.0]
>         at org.apache.cassandra.schema.SchemaKeyspace.mergeSchemaAndAnnou=
nceVersion(SchemaKeyspace.java:1256) [apache-cassandra-3.9.0.jar:3.9.0]
>         at org.apache.cassandra.db.DefinitionsUpdateVerbHandler$1.runMayT=
hrow(DefinitionsUpdateVerbHandler.java:51) ~[apache-cassandra-3.9.0.jar:3.9=
.0]
>         at org.apache.cassandra.utils.WrappedRunnable.run(WrappedRunnable=
.java:28) ~[apache-cassandra-3.9.0.jar:3.9.0]
>         at java.util.concurrent.Executors$RunnableAdapter.call(Executors.=
java:511) ~[na:1.8.0_121]
>         at java.util.concurrent.FutureTask.run(FutureTask.java:266) ~[na:=
1.8.0_121]
>         at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolEx=
ecutor.java:1142) ~[na:1.8.0_121]
>         at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolE=
xecutor.java:617) ~[na:1.8.0_121]
>         at java.lang.Thread.run(Thread.java:745) ~[na:1.8.0_121]
> {code}


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