com.datastax.driver.core.exceptions.ReadTimeoutException

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  • Cassandra cluster poor performance
    via Stack Overflow by Atver
    ,
    • com.datastax.driver.core.exceptions.ReadTimeoutException: Cassandra timeout during read query at consistency LOCAL_QUORUM (2 responses were required but only 1 replica responded) It is interesting that 1 node still responds. Several entries of failed hints errors: Failed replaying hints to /1.1.1.1; aborting (135922 delivered), error : Operation timed out - received only 0 responses. Several following exceptions in cassandra logs: Unexpected exception during request; channel = [id: 0x10fc77df, /2.2.2.2:54459 :> /1.1.1.1:9042] java.io.IOException: Error while read(...): Connection timed out at io.netty.channel.epoll.Native.readAddress(Native Method)[netty-all-4.0.23.Final.jar:4.0.23.Final] at io.netty.channel.epoll.EpollSocketChannel$EpollSocketUnsafe.doReadBytes(EpollSocketChannel.java:675)[netty-all-4.0.23.Final.jar:4.0.23.Final] at io.netty.channel.epoll.EpollSocketChannel$EpollSocketUnsafe.epollInReady(EpollSocketChannel.java:714)[netty-all-4.0.23.Final.jar:4.0.23.Final] at io.netty.channel.epoll.EpollEventLoop.processReady(EpollEventLoop.java:326)[netty-all-4.0.23.Final.jar:4.0.23.Final] at io.netty.channel.epoll.EpollEventLoop.run(EpollEventLoop.java:264)[netty-all-4.0.23.Final.jar:4.0.23.Final] at io.netty.util.concurrent.SingleThreadEventExecutor$2.run(SingleThreadEventExecutor.java:116)[netty-all-4.0.23.Final.jar:4.0.23.Final] at io.netty.util.concurrent.DefaultThreadFactory$DefaultRunnableDecorator.run(DefaultThreadFactory.java:137)[netty-all-4.0.23.Final.jar:4.0.23.Final] at java.lang.Thread.run(Thread.java:745)[na:1.8.0_66]
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