io.netty.handler.codec.EncoderException: java.lang.ClassCastException: [Ljava.lang.Object; cannot be cast to [B

GitHub | YuvalItzchakov | 2 months ago
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    Why my spark code having memory leak?

    Stack Overflow | 11 months ago | Kramer Li
    io.netty.handler.codec.EncoderException: java.lang.OutOfMemoryError: Java heap space
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    samebug tip
    You have mismatched versions of elasticSearch among your nodes or you have a DB running a version of elasticSearch incompatible with the client's version. Try updating or downgrading so the versions match.
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    GitHub comment 38#235824924

    GitHub | 7 months ago | xuwei-k
    io.netty.handler.codec.EncoderException: scala.MatchError: PersonId(1) (of class parameterbinderfactory.PersonId)
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    Gremlin driver exception

    Google Groups | 1 year ago | Sudha Subramanian
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    Using Camel netty4 "unsupported message type" exception when sending String over UDP

    Stack Overflow | 2 years ago | nishant
    java.lang.UnsupportedOperationException: unsupported message type: DefaultAddressedEnvelope (expected: DatagramPacket, AddressedEnvelope<ByteBuf, SocketAddress>, ByteBuf)

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    Root Cause Analysis

    1. java.lang.ClassCastException

      [Ljava.lang.Object; cannot be cast to [B

      at io.netty.buffer.PooledHeapByteBuf._setLong()
    2. Netty
      AbstractByteBuf.writeLong
      1. io.netty.buffer.PooledHeapByteBuf._setLong(PooledHeapByteBuf.java:185)
      2. io.netty.buffer.AbstractByteBuf.writeLong(AbstractByteBuf.java:791)
      2 frames
    3. Spark
      MessageEncoder.encode
      1. org.apache.spark.network.protocol.MessageEncoder.encode(MessageEncoder.java:79)
      2. org.apache.spark.network.protocol.MessageEncoder.encode(MessageEncoder.java:33)
      2 frames
    4. Netty
      SingleThreadEventExecutor$2.run
      1. io.netty.handler.codec.MessageToMessageEncoder.write(MessageToMessageEncoder.java:89)
      2. io.netty.channel.AbstractChannelHandlerContext.invokeWrite(AbstractChannelHandlerContext.java:633)
      3. io.netty.channel.AbstractChannelHandlerContext.write(AbstractChannelHandlerContext.java:691)
      4. io.netty.channel.AbstractChannelHandlerContext.write(AbstractChannelHandlerContext.java:626)
      5. io.netty.handler.timeout.IdleStateHandler.write(IdleStateHandler.java:284)
      6. io.netty.channel.AbstractChannelHandlerContext.invokeWrite(AbstractChannelHandlerContext.java:633)
      7. io.netty.channel.AbstractChannelHandlerContext.access$1900(AbstractChannelHandlerContext.java:32)
      8. io.netty.channel.AbstractChannelHandlerContext$AbstractWriteTask.write(AbstractChannelHandlerContext.java:908)
      9. io.netty.channel.AbstractChannelHandlerContext$WriteAndFlushTask.write(AbstractChannelHandlerContext.java:960)
      10. io.netty.channel.AbstractChannelHandlerContext$AbstractWriteTask.run(AbstractChannelHandlerContext.java:893)
      11. io.netty.util.concurrent.SingleThreadEventExecutor.runAllTasks(SingleThreadEventExecutor.java:357)
      12. io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:357)
      13. io.netty.util.concurrent.SingleThreadEventExecutor$2.run(SingleThreadEventExecutor.java:111)
      13 frames
    5. Java RT
      Thread.run
      1. java.lang.Thread.run(Thread.java:745)
      1 frame