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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 /; aborting (135922 delivered), error : Operation timed out - received only 0 responses. Several following exceptions in cassandra logs: Unexpected exception during request; channel = [id: 0x10fc77df, / :> /] Error while read(...): Connection timed out at Method)[netty-all-4.0.23.Final.jar:4.0.23.Final] at$EpollSocketUnsafe.doReadBytes([netty-all-4.0.23.Final.jar:4.0.23.Final] at$EpollSocketUnsafe.epollInReady([netty-all-4.0.23.Final.jar:4.0.23.Final] at[netty-all-4.0.23.Final.jar:4.0.23.Final] at[netty-all-4.0.23.Final.jar:4.0.23.Final] at io.netty.util.concurrent.SingleThreadEventExecutor$[netty-all-4.0.23.Final.jar:4.0.23.Final] at io.netty.util.concurrent.DefaultThreadFactory$[netty-all-4.0.23.Final.jar:4.0.23.Final] at[na:1.8.0_66]
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