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https://issues.apache.org/jira/browse/FLINK-12992?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16876018#comment-16876018
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yanxiaobin commented on FLINK-12992:
------------------------------------
At present, I have upgraded the netty version of the datastax Java driver to
the netty version that flink depends on, and the problem is solved.
> All host(s) tried for query failed (tried
> com.datastax.driver.core.exceptions.TransportException: Error writing...)
> -------------------------------------------------------------------------------------------------------------------
>
> Key: FLINK-12992
> URL: https://issues.apache.org/jira/browse/FLINK-12992
> Project: Flink
> Issue Type: Bug
> Components: Connectors / Cassandra
> Affects Versions: 1.7.2, 1.8.0
> Environment: <dependency>
> <groupId>org.apache.flink</groupId>
> <artifactId>flink-connector-cassandra_2.11</artifactId>
> <version>1.8.0</version>
> </dependency>
> Reporter: yanxiaobin
> Priority: Critical
>
> We are using flink streming application with cassandra connector providing
> sinks that writes data into a [Apache
> Cassandra|https://cassandra.apache.org/] database.
> At first we found the following exceptions：All host(s) tried for query failed
> (tried com.datastax.driver.core.exceptions.TransportException: Error
> writing...). This exception will cause the streaming job to fail
>
> And we have carefully checked that Cassandra service and network are all
> normal. Finally, we refer to the source code of DataStax Java Driver that the
> connector depends on. We found that the real exception caused the problem is
> as follows:
> com.datastax.shaded.netty.handler.codec.EncoderException:
> java.lang.IllegalAccessError: com/datastax/driver/core/Frame at
> com.datastax.shaded.netty.handler.codec.MessageToMessageEncoder.write(MessageToMessageEncoder.java:107)
> at
> com.datastax.shaded.netty.channel.AbstractChannelHandlerContext.invokeWrite(AbstractChannelHandlerContext.java:643)
> at
> com.datastax.shaded.netty.channel.AbstractChannelHandlerContext.write(AbstractChannelHandlerContext.java:700)
> at
> com.datastax.shaded.netty.channel.AbstractChannelHandlerContext.write(AbstractChannelHandlerContext.java:636)
> at
> com.datastax.shaded.netty.handler.codec.MessageToMessageEncoder.write(MessageToMessageEncoder.java:112)
> at
> com.datastax.shaded.netty.channel.AbstractChannelHandlerContext.invokeWrite(AbstractChannelHandlerContext.java:643)
> at
> com.datastax.shaded.netty.channel.AbstractChannelHandlerContext.write(AbstractChannelHandlerContext.java:700)
> at
> com.datastax.shaded.netty.channel.AbstractChannelHandlerContext.write(AbstractChannelHandlerContext.java:636)
> at
> com.datastax.shaded.netty.handler.timeout.IdleStateHandler.write(IdleStateHandler.java:284)
> at
> com.datastax.shaded.netty.channel.AbstractChannelHandlerContext.invokeWrite(AbstractChannelHandlerContext.java:643)
> at
> com.datastax.shaded.netty.channel.AbstractChannelHandlerContext.write(AbstractChannelHandlerContext.java:700)
> at
> com.datastax.shaded.netty.channel.AbstractChannelHandlerContext.write(AbstractChannelHandlerContext.java:636)
> at
> com.datastax.shaded.netty.channel.AbstractChannelHandlerContext.write(AbstractChannelHandlerContext.java:622)
> at
> com.datastax.shaded.netty.channel.DefaultChannelPipeline.write(DefaultChannelPipeline.java:939)
> at
> com.datastax.shaded.netty.channel.AbstractChannel.write(AbstractChannel.java:234)
> at com.datastax.driver.core.Connection$Flusher.run(Connection.java:872) at
> com.datastax.shaded.netty.util.concurrent.SingleThreadEventExecutor.runAllTasks(SingleThreadEventExecutor.java:358)
> at
> com.datastax.shaded.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:357)
> at
> com.datastax.shaded.netty.util.concurrent.SingleThreadEventExecutor$2.run(SingleThreadEventExecutor.java:112)
> at java.lang.Thread.run(Thread.java:748) Caused by:
> java.lang.IllegalAccessError: com/datastax/driver/core/Frame at
> com.datastax.shaded.netty.util.internal.__matchers__.com.datastax.driver.core.FrameMatcher.match(NoOpTypeParameterMatcher.java)
> at
> com.datastax.shaded.netty.handler.codec.MessageToMessageEncoder.acceptOutboundMessage(MessageToMessageEncoder.java:77)
> at
> com.datastax.shaded.netty.handler.codec.MessageToMessageEncoder.write(MessageToMessageEncoder.java:84)
>
> Based on this exception, we found relevant information
> [https://datastax-oss.atlassian.net/browse/JAVA-1337?page=com.atlassian.jira.plugin.system.issuetabpanels%3Acomment-tabpanel]
>
>
> Because I found that the latest version of flink-cassandra-connector uses the
> datastax Java driver old version 3.0.0.Perhaps we should upgrade the version
> on which the connector depends to Java driver 3.3.0+ to avoid this problem.
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