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https://issues.apache.org/jira/browse/CASSANDRA-18780?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17756585#comment-17756585
]
Maxim Muzafarov commented on CASSANDRA-18780:
---------------------------------------------
Another thing, that happens when an error occurs during the test execution
(like the one mentioned in the ticket description) is that the test itself
waits indefinitely on inbound/outbound socket close futures, because the signal
is not released in the Verifry class. Here are some stack traces to illustrate
the issue.
{code}
"main" #1 prio=5 os_prio=31 cpu=1826.36ms elapsed=20.33s tid=0x0000000154016800
nid=0x2203 waiting on condition [0x000000016b5c9000]
java.lang.Thread.State: TIMED_WAITING (parking)
at jdk.internal.misc.Unsafe.park(java.base@11.0.17/Native Method)
at
java.util.concurrent.locks.LockSupport.parkNanos(java.base@11.0.17/LockSupport.java:357)
at
org.apache.cassandra.utils.concurrent.WaitQueue$Standard$AbstractSignal.awaitUntil(WaitQueue.java:302)
at
org.apache.cassandra.utils.concurrent.Awaitable$AsyncAwaitable.awaitUntil(Awaitable.java:314)
at
org.apache.cassandra.utils.concurrent.AsyncFuture.awaitUntil(AsyncFuture.java:160)
at
org.apache.cassandra.utils.concurrent.Awaitable$Defaults.await(Awaitable.java:114)
at
org.apache.cassandra.utils.concurrent.AbstractFuture.await(AbstractFuture.java:449)
at
org.apache.cassandra.utils.concurrent.AbstractFuture.get(AbstractFuture.java:252)
at
org.apache.cassandra.net.ConnectionBurnTest$Test.run(ConnectionBurnTest.java:509)
at
org.apache.cassandra.net.ConnectionBurnTest.test(ConnectionBurnTest.java:678)
at
org.apache.cassandra.net.ConnectionBurnTest.test(ConnectionBurnTest.java:719)
at
jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(java.base@11.0.17/Native
Method)
{code}
{code}
"Messaging-EventLoop-6-1" #24 daemon prio=5 os_prio=31 cpu=3231.92ms
elapsed=18.01s tid=0x0000000141b38800 nid=0x8203 waiting on condition
[0x000000016ea0e000]
java.lang.Thread.State: WAITING (parking)
at jdk.internal.misc.Unsafe.park(java.base@11.0.17/Native Method)
at
java.util.concurrent.locks.LockSupport.park(java.base@11.0.17/LockSupport.java:323)
at
org.apache.cassandra.utils.concurrent.WaitQueue$Standard$AbstractSignal.await(WaitQueue.java:289)
at
org.apache.cassandra.utils.concurrent.WaitQueue$Standard$AbstractSignal.await(WaitQueue.java:282)
at
org.apache.cassandra.net.Verifier$EventSequence.ensureChunk(Verifier.java:1341)
at
org.apache.cassandra.net.Verifier$EventSequence.put(Verifier.java:1314)
at org.apache.cassandra.net.Verifier.onSerialize(Verifier.java:293)
at org.apache.cassandra.net.Connection.serialize(Connection.java:199)
at
org.apache.cassandra.net.ConnectionBurnTest$Test$1.serialize(ConnectionBurnTest.java:161)
at
org.apache.cassandra.net.ConnectionBurnTest$Test$1.serialize(ConnectionBurnTest.java:157)
at
org.apache.cassandra.net.Message$Serializer.serialize(Message.java:712)
at
org.apache.cassandra.net.OutboundConnection$EventLoopDelivery.doRun(OutboundConnection.java:817)
at
org.apache.cassandra.net.OutboundConnection$Delivery.run(OutboundConnection.java:691)
{code}
> ConnectionBurnTest fails with NullPointerException
> --------------------------------------------------
>
> Key: CASSANDRA-18780
> URL: https://issues.apache.org/jira/browse/CASSANDRA-18780
> Project: Cassandra
> Issue Type: Bug
> Reporter: Maxim Muzafarov
> Assignee: Maxim Muzafarov
> Priority: Normal
>
> The ConnectionBurnTest is used to check the throughput of outgoing and
> incoming connections and report the results of execution to the log. During
> the test run, I noticed a couple of errors that actually prevent us from
> getting any results.
> # The {{NullPointerException}} is thrown during the test execution
> {code:java}
> java.lang.NullPointerException: null
> at
> org.apache.cassandra.metrics.ClientMetrics.unpauseConnection(ClientMetrics.java:69)
> at
> org.apache.cassandra.net.AbstractMessageHandler.onReserveCapacityRegained(AbstractMessageHandler.java:314)
> at
> org.apache.cassandra.net.AbstractMessageHandler.onGlobalReserveCapacityRegained(AbstractMessageHandler.java:289)
> at
> org.apache.cassandra.net.AbstractMessageHandler$WaitQueue$Ticket.reactivateHandler(AbstractMessageHandler.java:792)
> at
> org.apache.cassandra.net.AbstractMessageHandler$WaitQueue$ReactivateHandlers.run(AbstractMessageHandler.java:740)
> {code}
> # The exception is swallowed and the test exits almost immediately, but the
> exception itself is not rethrown and the exit code is zero. The test is
> always green on CI, but a fatal exception has occurred;
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