duhanmin commented on issue #23278: [SPARK-24920][Core] Allow sharing Netty's memory pool allocators URL: https://github.com/apache/spark/pull/23278#issuecomment-447285039 How to solve this problem -------------------------------------------------------------------------------------------------- java.io.IOException: Failed to send RPC 6187565377399199898 to slave2.sf.fullink.tech/172.19.139.81:37470: io.netty.handler.codec.EncoderException: java.lang.OutOfMemoryError: Java heap space at org.apache.spark.network.client.TransportClient.lambda$sendRpc$2(TransportClient.java:237) at io.netty.util.concurrent.DefaultPromise.notifyListener0(DefaultPromise.java:507) at io.netty.util.concurrent.DefaultPromise.notifyListenersNow(DefaultPromise.java:481) at io.netty.util.concurrent.DefaultPromise.notifyListeners(DefaultPromise.java:420) at io.netty.util.concurrent.DefaultPromise.tryFailure(DefaultPromise.java:122) at io.netty.util.internal.PromiseNotificationUtil.tryFailure(PromiseNotificationUtil.java:64) at io.netty.channel.AbstractChannelHandlerContext.notifyOutboundHandlerException(AbstractChannelHandlerContext.java:837) at io.netty.channel.AbstractChannelHandlerContext.invokeWrite0(AbstractChannelHandlerContext.java:740) at io.netty.channel.AbstractChannelHandlerContext.invokeWrite(AbstractChannelHandlerContext.java:730) at io.netty.channel.AbstractChannelHandlerContext.write(AbstractChannelHandlerContext.java:816) at io.netty.channel.AbstractChannelHandlerContext.write(AbstractChannelHandlerContext.java:723) at io.netty.handler.timeout.IdleStateHandler.write(IdleStateHandler.java:302) at io.netty.channel.AbstractChannelHandlerContext.invokeWrite0(AbstractChannelHandlerContext.java:738) at io.netty.channel.AbstractChannelHandlerContext.invokeWrite(AbstractChannelHandlerContext.java:730) at io.netty.channel.AbstractChannelHandlerContext.access$1900(AbstractChannelHandlerContext.java:38) at io.netty.channel.AbstractChannelHandlerContext$AbstractWriteTask.write(AbstractChannelHandlerContext.java:1081) at io.netty.channel.AbstractChannelHandlerContext$WriteAndFlushTask.write(AbstractChannelHandlerContext.java:1128) at io.netty.channel.AbstractChannelHandlerContext$AbstractWriteTask.run(AbstractChannelHandlerContext.java:1070) at io.netty.util.concurrent.AbstractEventExecutor.safeExecute(AbstractEventExecutor.java:163) at io.netty.util.concurrent.SingleThreadEventExecutor.runAllTasks(SingleThreadEventExecutor.java:403) at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:463) at io.netty.util.concurrent.SingleThreadEventExecutor$5.run(SingleThreadEventExecutor.java:858) at io.netty.util.concurrent.DefaultThreadFactory$DefaultRunnableDecorator.run(DefaultThreadFactory.java:138) at java.lang.Thread.run(Thread.java:748) Caused by: io.netty.handler.codec.EncoderException: java.lang.OutOfMemoryError: Java heap space at io.netty.handler.codec.MessageToMessageEncoder.write(MessageToMessageEncoder.java:106) at io.netty.channel.AbstractChannelHandlerContext.invokeWrite0(AbstractChannelHandlerContext.java:738) ... 16 more Caused by: java.lang.OutOfMemoryError: Java heap space at io.netty.util.internal.PlatformDependent.allocateUninitializedArray(PlatformDependent.java:200) at io.netty.buffer.PoolArena$HeapArena.newByteArray(PoolArena.java:676) at io.netty.buffer.PoolArena$HeapArena.newChunk(PoolArena.java:686) at io.netty.buffer.PoolArena.allocateNormal(PoolArena.java:244) at io.netty.buffer.PoolArena.allocate(PoolArena.java:214) at io.netty.buffer.PoolArena.allocate(PoolArena.java:146) at io.netty.buffer.PooledByteBufAllocator.newHeapBuffer(PooledByteBufAllocator.java:307) at io.netty.buffer.AbstractByteBufAllocator.heapBuffer(AbstractByteBufAllocator.java:166) at io.netty.buffer.AbstractByteBufAllocator.heapBuffer(AbstractByteBufAllocator.java:157) at org.apache.spark.network.protocol.MessageEncoder.encode(MessageEncoder.java:82) at org.apache.spark.network.protocol.MessageEncoder.encode(MessageEncoder.java:33) at io.netty.handler.codec.MessageToMessageEncoder.write(MessageToMessageEncoder.java:88) ... 17 more
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