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Posted to commits@cassandra.apache.org by "Jon Meredith (Jira)" <ji...@apache.org> on 2022/01/11 00:11:00 UTC
[jira] [Created] (CASSANDRA-17252) ConnectionLimitHandler may leaks connection count if remote connection drops
Jon Meredith created CASSANDRA-17252:
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Summary: ConnectionLimitHandler may leaks connection count if remote connection drops
Key: CASSANDRA-17252
URL: https://issues.apache.org/jira/browse/CASSANDRA-17252
Project: Cassandra
Issue Type: Bug
Reporter: Jon Meredith
In some cases, Netty does not return the original IP used for per-IP counting when the channel becomes inactive,
which throws an NPE before decrementing the active per-IP count.
{code:java}
java.lang.NullPointerException
at org.apache.cassandra.transport.ConnectionLimitHandler.channelInactive(ConnectionLimitHandler.java:101)
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelInactive(AbstractChannelHandlerContext.java:262)
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelInactive(AbstractChannelHandlerContext.java:248)
at io.netty.channel.AbstractChannelHandlerContext.fireChannelInactive(AbstractChannelHandlerContext.java:241)
at io.netty.handler.codec.ByteToMessageDecoder.channelInputClosed(ByteToMessageDecoder.java:389)
at io.netty.handler.codec.ByteToMessageDecoder.channelInactive(ByteToMessageDecoder.java:354)
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelInactive(AbstractChannelHandlerContext.java:262)
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelInactive(AbstractChannelHandlerContext.java:248)
at io.netty.channel.AbstractChannelHandlerContext.fireChannelInactive(AbstractChannelHandlerContext.java:241)
at io.netty.channel.DefaultChannelPipeline$HeadContext.channelInactive(DefaultChannelPipeline.java:1405)
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelInactive(AbstractChannelHandlerContext.java:262)
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelInactive(AbstractChannelHandlerContext.java:248)
at io.netty.channel.DefaultChannelPipeline.fireChannelInactive(DefaultChannelPipeline.java:901)
at io.netty.channel.AbstractChannel$AbstractUnsafe$8.run(AbstractChannel.java:819)
at io.netty.util.concurrent.AbstractEventExecutor.safeExecute(AbstractEventExecutor.java:164)
at io.netty.util.concurrent.SingleThreadEventExecutor.runAllTasks(SingleThreadEventExecutor.java:472)
at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:497)
at io.netty.util.concurrent.SingleThreadEventExecutor$4.run(SingleThreadEventExecutor.java:989)
at io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74)
at io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30)
at java.base/java.lang.Thread.run(Thread.java:834)
{code}
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