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From Vikas Garg <sperry...@gmail.com>
Subject Re: Issue with executer
Date Wed, 20 Jan 2021 12:30:58 GMT
Hi Sachit,

I am running it in local. My IP mentioned is the private IP address and
therefore it is useless for anyone.

On Wed, 20 Jan 2021 at 17:37, Sachit Murarka <connectsachit@gmail.com>
wrote:

> Hi Vikas
>
> 1. Are you running in local mode? Master has local[*]
> 2. Pls mask the ip or confidential info while sharing logs
>
> Thanks
> Sachit
>
> On Wed, 20 Jan 2021, 17:35 Vikas Garg, <sperry.it@gmail.com> wrote:
>
>> Hi,
>>
>> I am facing issue with spark executor. I am struggling with this issue
>> since last many days and unable to resolve the issue.
>>
>> Below is the configuration I have given.
>>
>>   val spark = SparkSession.builder()
>>     .appName("Spark Job")
>>     .master("local[*]")
>>     .config("spark.dynamicAllocation.enabled", true)
>>     .config("spark.shuffle.service.enabled", true)
>>     .config("spark.driver.maxResultSize", "8g")
>>     .config("spark.driver.memory", "8g")
>>     .config("spark.executor.memory", "8g")
>>     .config("spark.network.timeout", "3600s")
>>     .getOrCreate()
>>
>> 1/01/20 17:06:57 ERROR RetryingBlockFetcher: Exception while beginning
>> fetch of 1 outstanding blocks
>>
>> *java.io.IOException*: Failed to connect to
>> del1-lhp-n99999.synapse.com/192.168.166.213:51348
>>
>>             at
>> org.apache.spark.network.client.TransportClientFactory.createClient(
>> *TransportClientFactory.java:253*)
>>
>>             at
>> org.apache.spark.network.client.TransportClientFactory.createClient(
>> *TransportClientFactory.java:195*)
>>
>>             at
>> org.apache.spark.network.netty.NettyBlockTransferService$$anon$2.createAndStart(
>> *NettyBlockTransferService.scala:122*)
>>
>>             at
>> org.apache.spark.network.shuffle.RetryingBlockFetcher.fetchAllOutstanding(
>> *RetryingBlockFetcher.java:141*)
>>
>>             at
>> org.apache.spark.network.shuffle.RetryingBlockFetcher.start(
>> *RetryingBlockFetcher.java:121*)
>>
>>             at
>> org.apache.spark.network.netty.NettyBlockTransferService.fetchBlocks(
>> *NettyBlockTransferService.scala:143*)
>>
>>             at
>> org.apache.spark.network.BlockTransferService.fetchBlockSync(
>> *BlockTransferService.scala:103*)
>>
>>             at
>> org.apache.spark.storage.BlockManager.fetchRemoteManagedBuffer(
>> *BlockManager.scala:1010*)
>>
>>             at
>> org.apache.spark.storage.BlockManager.$anonfun$getRemoteBlock$8(
>> *BlockManager.scala:954*)
>>
>>             at scala.Option.orElse(*Option.scala:289*)
>>
>>             at org.apache.spark.storage.BlockManager.getRemoteBlock(
>> *BlockManager.scala:954*)
>>
>>             at org.apache.spark.storage.BlockManager.getRemoteBytes(
>> *BlockManager.scala:1092*)
>>
>>             at
>> org.apache.spark.scheduler.TaskResultGetter$$anon$3.$anonfun$run$1(
>> *TaskResultGetter.scala:88*)
>>
>>             at
>> scala.runtime.java8.JFunction0$mcV$sp.apply(JFunction0$mcV$sp.java:12)
>>
>>             at org.apache.spark.util.Utils$.logUncaughtExceptions(
>> *Utils.scala:1932*)
>>
>>             at org.apache.spark.scheduler.TaskResultGetter$$anon$3.run(
>> *TaskResultGetter.scala:63*)
>>
>>             at java.util.concurrent.ThreadPoolExecutor.runWorker(
>> *ThreadPoolExecutor.java:1149*)
>>
>>             at java.util.concurrent.ThreadPoolExecutor$Worker.run(
>> *ThreadPoolExecutor.java:624*)
>>
>>             at java.lang.Thread.run(*Thread.java:748*)
>>
>> Caused by: *io.netty.channel.AbstractChannel$AnnotatedSocketException*:
>> Permission denied: no further information:
>> del1-lhp-n99999.synapse.com/192.168.166.213:51348
>>
>> Caused by: *java.net.SocketException*: Permission denied: no further
>> information
>>
>>             at sun.nio.ch.SocketChannelImpl.checkConnect(*Native Method*)
>>
>>             at sun.nio.ch.SocketChannelImpl.finishConnect(
>> *SocketChannelImpl.java:715*)
>>
>>             at
>> io.netty.channel.socket.nio.NioSocketChannel.doFinishConnect(
>> *NioSocketChannel.java:330*)
>>
>>             at
>> io.netty.channel.nio.AbstractNioChannel$AbstractNioUnsafe.finishConnect(
>> *AbstractNioChannel.java:334*)
>>
>>             at io.netty.channel.nio.NioEventLoop.processSelectedKey(
>> *NioEventLoop.java:702*)
>>
>>             at
>> io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(
>> *NioEventLoop.java:650*)
>>
>>             at io.netty.channel.nio.NioEventLoop.processSelectedKeys(
>> *NioEventLoop.java:576*)
>>
>>             at io.netty.channel.nio.NioEventLoop.run(
>> *NioEventLoop.java:493*)
>>
>>             at io.netty.util.concurrent.SingleThreadEventExecutor$4.run(
>> *SingleThreadEventExecutor.java:989*)
>>
>>             at io.netty.util.internal.ThreadExecutorMap$2.run(
>> *ThreadExecutorMap.java:74*)
>>
>>             at io.netty.util.concurrent.FastThreadLocalRunnable.run(
>> *FastThreadLocalRunnable.java:30*)
>>
>>             at java.lang.Thread.run(*Thread.java:748*)
>>
>> 21/01/20 17:06:57 ERROR RetryingBlockFetcher: Exception while beginning
>> fetch of 1 outstanding blocks
>>
>> *java.io.IOException*: Failed to connect to
>> del1-lhp-n99999.synapse.com/192.168.166.213:51348
>>
>>             at
>> org.apache.spark.network.client.TransportClientFactory.createClient(
>> *TransportClientFactory.java:253*)
>>
>>             at
>> org.apache.spark.network.client.TransportClientFactory.createClient(
>> *TransportClientFactory.java:195*)
>>
>>             at
>> org.apache.spark.network.netty.NettyBlockTransferService$$anon$2.createAndStart(
>> *NettyBlockTransferService.scala:122*)
>>
>>             at
>> org.apache.spark.network.shuffle.RetryingBlockFetcher.fetchAllOutstanding(
>> *RetryingBlockFetcher.java:141*)
>>
>>             at
>> org.apache.spark.network.shuffle.RetryingBlockFetcher.start(
>> *RetryingBlockFetcher.java:121*)
>>
>>             at
>> org.apache.spark.network.netty.NettyBlockTransferService.fetchBlocks(
>> *NettyBlockTransferService.scala:143*)
>>
>>             at
>> org.apache.spark.network.BlockTransferService.fetchBlockSync(
>> *BlockTransferService.scala:103*)
>>
>>             at
>> org.apache.spark.storage.BlockManager.fetchRemoteManagedBuffer(
>> *BlockManager.scala:1010*)
>>
>>             at
>> org.apache.spark.storage.BlockManager.$anonfun$getRemoteBlock$8(
>> *BlockManager.scala:954*)
>>
>>             at scala.Option.orElse(*Option.scala:289*)
>>
>>             at org.apache.spark.storage.BlockManager.getRemoteBlock(
>> *BlockManager.scala:954*)
>>
>>             at org.apache.spark.storage.BlockManager.getRemoteBytes(
>> *BlockManager.scala:1092*)
>>
>>             at
>> org.apache.spark.scheduler.TaskResultGetter$$anon$3.$anonfun$run$1(
>> *TaskResultGetter.scala:88*)
>>
>>             at
>> scala.runtime.java8.JFunction0$mcV$sp.apply(JFunction0$mcV$sp.java:12)
>>
>>             at org.apache.spark.util.Utils$.logUncaughtExceptions(
>> *Utils.scala:1932*)
>>
>>             at org.apache.spark.scheduler.TaskResultGetter$$anon$3.run(
>> *TaskResultGetter.scala:63*)
>>
>>             at java.util.concurrent.ThreadPoolExecutor.runWorker(
>> *ThreadPoolExecutor.java:1149*)
>>
>>             at java.util.concurrent.ThreadPoolExecutor$Worker.run(
>> *ThreadPoolExecutor.java:624*)
>>
>>             at java.lang.Thread.run(*Thread.java:748*)
>>
>> Caused by: *io.netty.channel.AbstractChannel$AnnotatedSocketException*:
>> Permission denied: no further information:
>> del1-lhp-n99999.synapse.com/192.168.166.213:51348
>>
>> Caused by: *java.net.SocketException*: Permission denied: no further
>> information
>>
>>             at sun.nio.ch.SocketChannelImpl.checkConnect(*Native Method*)
>>
>>             at sun.nio.ch.SocketChannelImpl.finishConnect(
>> *SocketChannelImpl.java:715*)
>>
>>             at
>> io.netty.channel.socket.nio.NioSocketChannel.doFinishConnect(
>> *NioSocketChannel.java:330*)
>>
>>             at
>> io.netty.channel.nio.AbstractNioChannel$AbstractNioUnsafe.finishConnect(
>> *AbstractNioChannel.java:334*)
>>
>>             at io.netty.channel.nio.NioEventLoop.processSelectedKey(
>> *NioEventLoop.java:702*)
>>
>>             at
>> io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(
>> *NioEventLoop.java:650*)
>>
>>             at io.netty.channel.nio.NioEventLoop.processSelectedKeys(
>> *NioEventLoop.java:576*)
>>
>>             at io.netty.channel.nio.NioEventLoop.run(
>> *NioEventLoop.java:493*)
>>
>>             at io.netty.util.concurrent.SingleThreadEventExecutor$4.run(
>> *SingleThreadEventExecutor.java:989*)
>>
>>             at io.netty.util.internal.ThreadExecutorMap$2.run(
>> *ThreadExecutorMap.java:74*)
>>
>>             at io.netty.util.concurrent.FastThreadLocalRunnable.run(
>> *FastThreadLocalRunnable.java:30*)
>>
>>             at java.lang.Thread.run(*Thread.java:748*)
>>
>> 21/01/20 17:07:02 ERROR RetryingBlockFetcher: Exception while beginning
>> fetch of 1 outstanding blocks (after 1 retries)
>>
>> *java.io.IOException*: Failed to connect to
>> del1-lhp-n99999.synapse.com/192.168.166.213:51348
>>
>>             at
>> org.apache.spark.network.client.TransportClientFactory.createClient(
>> *TransportClientFactory.java:253*)
>>
>>             at
>> org.apache.spark.network.client.TransportClientFactory.createClient(
>> *TransportClientFactory.java:195*)
>>
>>             at
>> org.apache.spark.network.netty.NettyBlockTransferService$$anon$2.createAndStart(
>> *NettyBlockTransferService.scala:122*)
>>
>>             at
>> org.apache.spark.network.shuffle.RetryingBlockFetcher.fetchAllOutstanding(
>> *RetryingBlockFetcher.java:141*)
>>
>>             at
>> org.apache.spark.network.shuffle.RetryingBlockFetcher.lambda$initiateRetry$0(
>> *RetryingBlockFetcher.java:169*)
>>
>>             at java.util.concurrent.Executors$RunnableAdapter.call(
>> *Executors.java:511*)
>>
>>             at java.util.concurrent.FutureTask.run(*FutureTask.java:266*)
>>
>>             at java.util.concurrent.ThreadPoolExecutor.runWorker(
>> *ThreadPoolExecutor.java:1149*)
>>
>>             at java.util.concurrent.ThreadPoolExecutor$Worker.run(
>> *ThreadPoolExecutor.java:624*)
>>
>>             at io.netty.util.concurrent.FastThreadLocalRunnable.run(
>> *FastThreadLocalRunnable.java:30*)
>>
>>             at java.lang.Thread.run(*Thread.java:748*)
>>
>> Caused by: *io.netty.channel.AbstractChannel$AnnotatedSocketException*:
>> Permission denied: no further information:
>> del1-lhp-n99999.synapse.com/192.168.166.213:51348
>>
>> Caused by: *java.net.SocketException*: Permission denied: no further
>> information
>>
>>             at sun.nio.ch.SocketChannelImpl.checkConnect(*Native Method*)
>>
>>             at sun.nio.ch.SocketChannelImpl.finishConnect(
>> *SocketChannelImpl.java:715*)
>>
>>             at
>> io.netty.channel.socket.nio.NioSocketChannel.doFinishConnect(
>> *NioSocketChannel.java:330*)
>>
>>             at
>> io.netty.channel.nio.AbstractNioChannel$AbstractNioUnsafe.finishConnect(
>> *AbstractNioChannel.java:334*)
>>
>>             at io.netty.channel.nio.NioEventLoop.processSelectedKey(
>> *NioEventLoop.java:702*)
>>
>>             at
>> io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(
>> *NioEventLoop.java:650*)
>>
>>             at io.netty.channel.nio.NioEventLoop.processSelectedKeys(
>> *NioEventLoop.java:576*)
>>
>>             at io.netty.channel.nio.NioEventLoop.run(
>> *NioEventLoop.java:493*)
>>
>>             at io.netty.util.concurrent.SingleThreadEventExecutor$4.run(
>> *SingleThreadEventExecutor.java:989*)
>>
>>             at io.netty.util.internal.ThreadExecutorMap$2.run(
>> *ThreadExecutorMap.java:74*)
>>
>>             at io.netty.util.concurrent.FastThreadLocalRunnable.run(
>> *FastThreadLocalRunnable.java:30*)
>>
>>             at java.lang.Thread.run(*Thread.java:748*)
>>
>> 21/01/20 17:07:02 ERROR RetryingBlockFetcher: Exception while beginning
>> fetch of 1 outstanding blocks (after 1 retries)
>>
>> *java.io.IOException*: Failed to connect to
>> del1-lhp-n99999.synapse.com/192.168.166.213:51348
>>
>>             at
>> org.apache.spark.network.client.TransportClientFactory.createClient(
>> *TransportClientFactory.java:253*)
>>
>>             at
>> org.apache.spark.network.client.TransportClientFactory.createClient(
>> *TransportClientFactory.java:195*)
>>
>>             at
>> org.apache.spark.network.netty.NettyBlockTransferService$$anon$2.createAndStart(
>> *NettyBlockTransferService.scala:122*)
>>
>>             at
>> org.apache.spark.network.shuffle.RetryingBlockFetcher.fetchAllOutstanding(
>> *RetryingBlockFetcher.java:141*)
>>
>>             at
>> org.apache.spark.network.shuffle.RetryingBlockFetcher.lambda$initiateRetry$0(
>> *RetryingBlockFetcher.java:169*)
>>
>>             at java.util.concurrent.Executors$RunnableAdapter.call(
>> *Executors.java:511*)
>>
>>             at java.util.concurrent.FutureTask.run(*FutureTask.java:266*)
>>
>>             at java.util.concurrent.ThreadPoolExecutor.runWorker(
>> *ThreadPoolExecutor.java:1149*)
>>
>>             at java.util.concurrent.ThreadPoolExecutor$Worker.run(
>> *ThreadPoolExecutor.java:624*)
>>
>>             at io.netty.util.concurrent.FastThreadLocalRunnable.run(
>> *FastThreadLocalRunnable.java:30*)
>>
>>             at java.lang.Thread.run(*Thread.java:748*)
>>
>> Caused by: *io.netty.channel.AbstractChannel$AnnotatedSocketException*:
>> Permission denied: no further information:
>> del1-lhp-n99999.synapse.com/192.168.166.213:51348
>>
>> Caused by: *java.net.SocketException*: Permission denied: no further
>> information
>>
>>             at sun.nio.ch.SocketChannelImpl.checkConnect(*Native Method*)
>>
>>             at sun.nio.ch.SocketChannelImpl.finishConnect(
>> *SocketChannelImpl.java:715*)
>>
>>             at
>> io.netty.channel.socket.nio.NioSocketChannel.doFinishConnect(
>> *NioSocketChannel.java:330*)
>>
>>             at
>> io.netty.channel.nio.AbstractNioChannel$AbstractNioUnsafe.finishConnect(
>> *AbstractNioChannel.java:334*)
>>
>>             at io.netty.channel.nio.NioEventLoop.processSelectedKey(
>> *NioEventLoop.java:702*)
>>
>>             at
>> io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(
>> *NioEventLoop.java:650*)
>>
>>             at io.netty.channel.nio.NioEventLoop.processSelectedKeys(
>> *NioEventLoop.java:576*)
>>
>>             at io.netty.channel.nio.NioEventLoop.run(
>> *NioEventLoop.java:493*)
>>
>>             at io.netty.util.concurrent.SingleThreadEventExecutor$4.run(
>> *SingleThreadEventExecutor.java:989*)
>>
>>             at io.netty.util.internal.ThreadExecutorMap$2.run(
>> *ThreadExecutorMap.java:74*)
>>
>>             at io.netty.util.concurrent.FastThreadLocalRunnable.run(
>> *FastThreadLocalRunnable.java:30*)
>>
>>             at java.lang.Thread.run(*Thread.java:748*)
>>
>> 21/01/20 17:07:07 ERROR RetryingBlockFetcher: Exception while beginning
>> fetch of 1 outstanding blocks (after 2 retries)
>>
>> *java.io.IOException*: Failed to connect to
>> del1-lhp-n99999.synapse.com/192.168.166.213:51348
>>
>>             at
>> org.apache.spark.network.client.TransportClientFactory.createClient(
>> *TransportClientFactory.java:253*)
>>
>>             at
>> org.apache.spark.network.client.TransportClientFactory.createClient(
>> *TransportClientFactory.java:195*)
>>
>>             at
>> org.apache.spark.network.netty.NettyBlockTransferService$$anon$2.createAndStart(
>> *NettyBlockTransferService.scala:122*)
>>
>>             at
>> org.apache.spark.network.shuffle.RetryingBlockFetcher.fetchAllOutstanding(
>> *RetryingBlockFetcher.java:141*)
>>
>>             at
>> org.apache.spark.network.shuffle.RetryingBlockFetcher.lambda$initiateRetry$0(
>> *RetryingBlockFetcher.java:169*)
>>
>>             at java.util.concurrent.Executors$RunnableAdapter.call(
>> *Executors.java:511*)
>>
>>             at java.util.concurrent.FutureTask.run(*FutureTask.java:266*)
>>
>>             at java.util.concurrent.ThreadPoolExecutor.runWorker(
>> *ThreadPoolExecutor.java:1149*)
>>
>>             at java.util.concurrent.ThreadPoolExecutor$Worker.run(
>> *ThreadPoolExecutor.java:624*)
>>
>>             at io.netty.util.concurrent.FastThreadLocalRunnable.run(
>> *FastThreadLocalRunnable.java:30*)
>>
>>             at java.lang.Thread.run(*Thread.java:748*)
>>
>> Caused by: *io.netty.channel.AbstractChannel$AnnotatedSocketException*:
>> Permission denied: no further information:
>> del1-lhp-n99999.synapse.com/192.168.166.213:51348
>>
>> Caused by: *java.net.SocketException*: Permission denied: no further
>> information
>>
>>             at sun.nio.ch.SocketChannelImpl.checkConnect(*Native Method*)
>>
>>             at sun.nio.ch.SocketChannelImpl.finishConnect(
>> *SocketChannelImpl.java:715*)
>>
>>             at
>> io.netty.channel.socket.nio.NioSocketChannel.doFinishConnect(
>> *NioSocketChannel.java:330*)
>>
>>             at
>> io.netty.channel.nio.AbstractNioChannel$AbstractNioUnsafe.finishConnect(
>> *AbstractNioChannel.java:334*)
>>
>>             at io.netty.channel.nio.NioEventLoop.processSelectedKey(
>> *NioEventLoop.java:702*)
>>
>>             at
>> io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(
>> *NioEventLoop.java:650*)
>>
>>             at io.netty.channel.nio.NioEventLoop.processSelectedKeys(
>> *NioEventLoop.java:576*)
>>
>>             at io.netty.channel.nio.NioEventLoop.run(
>> *NioEventLoop.java:493*)
>>
>>             at io.netty.util.concurrent.SingleThreadEventExecutor$4.run(
>> *SingleThreadEventExecutor.java:989*)
>>
>>             at io.netty.util.internal.ThreadExecutorMap$2.run(
>> *ThreadExecutorMap.java:74*)
>>
>>             at io.netty.util.concurrent.FastThreadLocalRunnable.run(
>> *FastThreadLocalRunnable.java:30*)
>>
>>             at java.lang.Thread.run(*Thread.java:748*)
>>
>> 21/01/20 17:07:07 ERROR RetryingBlockFetcher: Exception while beginning
>> fetch of 1 outstanding blocks (after 2 retries)
>>
>> *java.io.IOException*: Failed to connect to
>> del1-lhp-n99999.synapse.com/192.168.166.213:51348
>>
>>             at
>> org.apache.spark.network.client.TransportClientFactory.createClient(
>> *TransportClientFactory.java:253*)
>>
>>             at
>> org.apache.spark.network.client.TransportClientFactory.createClient(
>> *TransportClientFactory.java:195*)
>>
>>             at
>> org.apache.spark.network.netty.NettyBlockTransferService$$anon$2.createAndStart(
>> *NettyBlockTransferService.scala:122*)
>>
>>             at
>> org.apache.spark.network.shuffle.RetryingBlockFetcher.fetchAllOutstanding(
>> *RetryingBlockFetcher.java:141*)
>>
>>             at
>> org.apache.spark.network.shuffle.RetryingBlockFetcher.lambda$initiateRetry$0(
>> *RetryingBlockFetcher.java:169*)
>>
>>             at java.util.concurrent.Executors$RunnableAdapter.call(
>> *Executors.java:511*)
>>
>>             at java.util.concurrent.FutureTask.run(*FutureTask.java:266*)
>>
>>             at java.util.concurrent.ThreadPoolExecutor.runWorker(
>> *ThreadPoolExecutor.java:1149*)
>>
>>             at java.util.concurrent.ThreadPoolExecutor$Worker.run(
>> *ThreadPoolExecutor.java:624*)
>>
>>             at io.netty.util.concurrent.FastThreadLocalRunnable.run(
>> *FastThreadLocalRunnable.java:30*)
>>
>>             at java.lang.Thread.run(*Thread.java:748*)
>>
>> Caused by: *io.netty.channel.AbstractChannel$AnnotatedSocketException*:
>> Permission denied: no further information:
>> del1-lhp-n99999.synapse.com/192.168.166.213:51348
>>
>> Caused by: *java.net.SocketException*: Permission denied: no further
>> information
>>
>>             at sun.nio.ch.SocketChannelImpl.checkConnect(*Native Method*)
>>
>>             at sun.nio.ch.SocketChannelImpl.finishConnect(
>> *SocketChannelImpl.java:715*)
>>
>>             at
>> io.netty.channel.socket.nio.NioSocketChannel.doFinishConnect(
>> *NioSocketChannel.java:330*)
>>
>>             at
>> io.netty.channel.nio.AbstractNioChannel$AbstractNioUnsafe.finishConnect(
>> *AbstractNioChannel.java:334*)
>>
>>             at io.netty.channel.nio.NioEventLoop.processSelectedKey(
>> *NioEventLoop.java:702*)
>>
>>             at
>> io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(
>> *NioEventLoop.java:650*)
>>
>>             at io.netty.channel.nio.NioEventLoop.processSelectedKeys(
>> *NioEventLoop.java:576*)
>>
>>             at io.netty.channel.nio.NioEventLoop.run(
>> *NioEventLoop.java:493*)
>>
>>             at io.netty.util.concurrent.SingleThreadEventExecutor$4.run(
>> *SingleThreadEventExecutor.java:989*)
>>
>>             at io.netty.util.internal.ThreadExecutorMap$2.run(
>> *ThreadExecutorMap.java:74*)
>>
>>             at io.netty.util.concurrent.FastThreadLocalRunnable.run(
>> *FastThreadLocalRunnable.java:30*)
>>
>>             at java.lang.Thread.run(*Thread.java:748*)
>>
>> 21/01/20 17:07:12 ERROR RetryingBlockFetcher: Exception while beginning
>> fetch of 1 outstanding blocks (after 3 retries)
>>
>> *java.io.IOException*: Failed to connect to
>> del1-lhp-n99999.synapse.com/192.168.166.213:51348
>>
>>             at
>> org.apache.spark.network.client.TransportClientFactory.createClient(
>> *TransportClientFactory.java:253*)
>>
>>             at
>> org.apache.spark.network.client.TransportClientFactory.createClient(
>> *TransportClientFactory.java:195*)
>>
>>             at
>> org.apache.spark.network.netty.NettyBlockTransferService$$anon$2.createAndStart(
>> *NettyBlockTransferService.scala:122*)
>>
>>             at
>> org.apache.spark.network.shuffle.RetryingBlockFetcher.fetchAllOutstanding(
>> *RetryingBlockFetcher.java:141*)
>>
>>             at
>> org.apache.spark.network.shuffle.RetryingBlockFetcher.lambda$initiateRetry$0(
>> *RetryingBlockFetcher.java:169*)
>>
>>             at java.util.concurrent.Executors$RunnableAdapter.call(
>> *Executors.java:511*)
>>
>>             at java.util.concurrent.FutureTask.run(*FutureTask.java:266*)
>>
>>             at java.util.concurrent.ThreadPoolExecutor.runWorker(
>> *ThreadPoolExecutor.java:1149*)
>>
>>             at java.util.concurrent.ThreadPoolExecutor$Worker.run(
>> *ThreadPoolExecutor.java:624*)
>>
>>             at io.netty.util.concurrent.FastThreadLocalRunnable.run(
>> *FastThreadLocalRunnable.java:30*)
>>
>>             at java.lang.Thread.run(*Thread.java:748*)
>>
>> Caused by: *io.netty.channel.AbstractChannel$AnnotatedSocketException*:
>> Permission denied: no further information:
>> del1-lhp-n99999.synapse.com/192.168.166.213:51348
>>
>> Caused by: *java.net.SocketException*: Permission denied: no further
>> information
>>
>>             at sun.nio.ch.SocketChannelImpl.checkConnect(*Native Method*)
>>
>>             at sun.nio.ch.SocketChannelImpl.finishConnect(
>> *SocketChannelImpl.java:715*)
>>
>>             at
>> io.netty.channel.socket.nio.NioSocketChannel.doFinishConnect(*NioSocketC*
>>
>

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