Jon Meredith created CASSANDRA-15949:
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Summary: NPE thrown while updating speculative execution time if
table is removed during task execution
Key: CASSANDRA-15949
URL: https://issues.apache.org/jira/browse/CASSANDRA-15949
Project: Cassandra
Issue Type: Bug
Components: Local/Other
Reporter: Jon Meredith
CASSANDRA-14338 fixed the scheduling the speculation retry threshold
calculation, but if the task happens to be scheduled while a table is being
dropped, it triggers an NPE.
ERROR 2020-07-14T11:34:55,762 [OptionalTasks:1]
org.apache.cassandra.service.CassandraDaemon:446 - Exception in thread
Thread[OptionalTasks:1,5,main]
java.lang.NullPointerException: null
at org.apache.cassandra.db.Keyspace.initCf(Keyspace.java:444)
~[cassandra-4.0.0.jar:4.0.0]
at org.apache.cassandra.db.Keyspace.<init>(Keyspace.java:346)
~[cassandra-4.0.0.jar:4.0.0]
at org.apache.cassandra.db.Keyspace.open(Keyspace.java:139)
~[cassandra-4.0.0.jar:4.0.0]
at org.apache.cassandra.db.Keyspace.open(Keyspace.java:116)
~[cassandra-4.0.0.jar:4.0.0]
at org.apache.cassandra.db.Keyspace$1.apply(Keyspace.java:102)
~[cassandra-4.0.0.jar:4.0.0]
at org.apache.cassandra.db.Keyspace$1.apply(Keyspace.java:99)
~[cassandra-4.0.0.jar:4.0.0]
at
com.google.common.collect.Iterables$5.lambda$forEach$0(Iterables.java:704)
~[guava-27.0-jre.jar:?]
at
com.google.common.collect.IndexedImmutableSet.forEach(IndexedImmutableSet.java:45)
~[guava-27.0-jre.jar:?]
at com.google.common.collect.Iterables$5.forEach(Iterables.java:704)
~[guava-27.0-jre.jar:?]
at
org.apache.cassandra.service.CassandraDaemon.lambda$setup$2(CassandraDaemon.java:412)
~[cassandra-4.0.0.jar:4.0.0]
at
org.apache.cassandra.concurrent.DebuggableScheduledThreadPoolExecutor$UncomplainingRunnable.run(DebuggableScheduledThreadPoolExecutor.java:118)
[cassandra-4.0.0.jar:4.0.0]
at
java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:515) [?:?]
at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:305) [?:?]
at
java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:305)
[?:?]
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
[?:?]
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
[?:?]
at
io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30)
[netty-all-4.1.37.Final.jar:4.1.37.Final]
at java.lang.Thread.run(Thread.java:834) [?:?]
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