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From Akhil Das <ak...@sigmoidanalytics.com>
Subject Re: How to decrease the time of storing block in memory
Date Tue, 09 Jun 2015 07:02:10 GMT
May be you should check in your driver UI and see if there's any GC time
involved etc.

Thanks
Best Regards

On Mon, Jun 8, 2015 at 5:45 PM, <luohui20001@sina.com> wrote:

> hi there
>
>       I am trying to descrease my app's running time in worker node. I
> checked the log and found the most time-wasting part is below:
>
> 15/06/08 16:14:23 INFO storage.MemoryStore: Block broadcast_0 stored as
> values in memory (estimated size 2.1 KB, free 353.3 MB)
> 15/06/08 16:14:42 INFO executor.Executor: Finished task 0.0 in stage 0.0
> (TID 0). 693 bytes result sent to driver
>
>
> I don't know why it needs 19s to storing 2.1KB size data to memory. Is
> there any tuning method?
>
>
>
> The attache is the full log, here it is:
>
> 15/06/08 16:14:02 INFO executor.CoarseGrainedExecutorBackend: Registered
> signal handlers for [TERM, HUP, INT]
> 15/06/08 16:14:07 WARN util.NativeCodeLoader: Unable to load native-hadoop
> library for your platform... using builtin-java classes where applicable
> 15/06/08 16:14:10 INFO spark.SecurityManager: Changing view acls to: root
> 15/06/08 16:14:10 INFO spark.SecurityManager: Changing modify acls to: root
> 15/06/08 16:14:10 INFO spark.SecurityManager: SecurityManager:
> authentication disabled; ui acls disabled; users with view permissions:
> Set(root); users with modify permissions: Set(root)
> 15/06/08 16:14:14 INFO slf4j.Slf4jLogger: Slf4jLogger started
> 15/06/08 16:14:14 INFO Remoting: Starting remoting
> 15/06/08 16:14:15 INFO Remoting: Remoting started; listening on addresses
> :[akka.tcp://driverPropsFetcher@slave5:54684]
> 15/06/08 16:14:15 INFO util.Utils: Successfully started service
> 'driverPropsFetcher' on port 54684.
> 15/06/08 16:14:16 INFO spark.SecurityManager: Changing view acls to: root
> 15/06/08 16:14:16 INFO spark.SecurityManager: Changing modify acls to: root
> 15/06/08 16:14:16 INFO spark.SecurityManager: SecurityManager:
> authentication disabled; ui acls disabled; users with view permissions:
> Set(root); users with modify permissions: Set(root)
> 15/06/08 16:14:16 INFO remote.RemoteActorRefProvider$RemotingTerminator:
> Shutting down remote daemon.
> 15/06/08 16:14:16 INFO remote.RemoteActorRefProvider$RemotingTerminator:
> Remote daemon shut down; proceeding with flushing remote transports.
> 15/06/08 16:14:16 INFO slf4j.Slf4jLogger: Slf4jLogger started
> 15/06/08 16:14:16 INFO Remoting: Starting remoting
> 15/06/08 16:14:17 INFO remote.RemoteActorRefProvider$RemotingTerminator:
> Remoting shut down.
> 15/06/08 16:14:17 INFO Remoting: Remoting started; listening on addresses
> :[akka.tcp://sparkExecutor@slave5:49169]
> 15/06/08 16:14:17 INFO util.Utils: Successfully started service
> 'sparkExecutor' on port 49169.
> 15/06/08 16:14:17 INFO util.AkkaUtils: Connecting to MapOutputTracker:
> akka.tcp://sparkDriver@slave5:58630/user/MapOutputTracker
> 15/06/08 16:14:17 INFO util.AkkaUtils: Connecting to BlockManagerMaster:
> akka.tcp://sparkDriver@slave5:58630/user/BlockManagerMaster
> 15/06/08 16:14:17 INFO storage.DiskBlockManager: Created local directory
> at
> /tmp/spark-548b4618-4aba-4b63-9467-381fbfea8d5b/spark-83737dd6-46b0-47ee-82a5-5afee46bdbf5/spark-0fe9d8ba-2910-44a2-bf4f-80d179f5d58b/blockmgr-b4884e7a-2527-447a-9fc5-1823d923c2f1
> 15/06/08 16:14:17 INFO storage.MemoryStore: MemoryStore started with
> capacity 353.3 MB
> 15/06/08 16:14:17 INFO util.AkkaUtils: Connecting to
> OutputCommitCoordinator: akka.tcp://sparkDriver@slave5
> :58630/user/OutputCommitCoordinator
> 15/06/08 16:14:17 INFO executor.CoarseGrainedExecutorBackend: Connecting
> to driver: akka.tcp://sparkDriver@slave5:58630/user/CoarseGrainedScheduler
> 15/06/08 16:14:18 INFO worker.WorkerWatcher: Connecting to worker
> akka.tcp://sparkWorker@slave5:48926/user/Worker
> 15/06/08 16:14:18 INFO executor.CoarseGrainedExecutorBackend: Successfully
> registered with driver
> 15/06/08 16:14:18 INFO executor.Executor: Starting executor ID 0 on host
> slave5
> 15/06/08 16:14:18 INFO worker.WorkerWatcher: Successfully connected to
> akka.tcp://sparkWorker@slave5:48926/user/Worker
> 15/06/08 16:14:21 WARN internal.ThreadLocalRandom: Failed to generate a
> seed from SecureRandom within 3 seconds. Not enough entrophy?
> 15/06/08 16:14:21 INFO netty.NettyBlockTransferService: Server created on
> 53449
> 15/06/08 16:14:21 INFO storage.BlockManagerMaster: Trying to register
> BlockManager
> 15/06/08 16:14:21 INFO storage.BlockManagerMaster: Registered BlockManager
> 15/06/08 16:14:21 INFO util.AkkaUtils: Connecting to HeartbeatReceiver:
> akka.tcp://sparkDriver@slave5:58630/user/HeartbeatReceiver
> 15/06/08 16:14:21 INFO executor.CoarseGrainedExecutorBackend: Got assigned
> task 0
> 15/06/08 16:14:21 INFO executor.Executor: Running task 0.0 in stage 0.0
> (TID 0)
> 15/06/08 16:14:21 INFO executor.Executor: Fetching
> http://192.168.100.11:50648/jars/ShellCompare.jar with timestamp
> 1433751228699
> 15/06/08 16:14:21 INFO util.Utils: Fetching
> http://192.168.100.11:50648/jars/ShellCompare.jar to
> /tmp/spark-548b4618-4aba-4b63-9467-381fbfea8d5b/spark-83737dd6-46b0-47ee-82a5-5afee46bdbf5/spark-99aba156-5803-41b8-9df1-3e36305f43c3/fetchFileTemp8512004298922421624.tmp
> 15/06/08 16:14:21 INFO util.Utils: Copying
> /tmp/spark-548b4618-4aba-4b63-9467-381fbfea8d5b/spark-83737dd6-46b0-47ee-82a5-5afee46bdbf5/spark-99aba156-5803-41b8-9df1-3e36305f43c3/-8058314591433751228699_cache
> to /usr/lib/spark/work/app-20150608161350-0001/0/./ShellCompare.jar
> 15/06/08 16:14:22 INFO executor.Executor: Adding
> file:/usr/lib/spark/work/app-20150608161350-0001/0/./ShellCompare.jar to
> class loader
> 15/06/08 16:14:22 INFO broadcast.TorrentBroadcast: Started reading
> broadcast variable 0
> 15/06/08 16:14:23 INFO storage.MemoryStore: ensureFreeSpace(1561) called
> with curMem=0, maxMem=370503843
> 15/06/08 16:14:23 INFO storage.MemoryStore: Block broadcast_0_piece0
> stored as bytes in memory (estimated size 1561.0 B, free 353.3 MB)
> 15/06/08 16:14:23 INFO storage.BlockManagerMaster: Updated info of block
> broadcast_0_piece0
> 15/06/08 16:14:23 INFO broadcast.TorrentBroadcast: Reading broadcast
> variable 0 took 967 ms
> 15/06/08 16:14:23 INFO storage.MemoryStore: ensureFreeSpace(2168) called
> with curMem=1561, maxMem=370503843
> 15/06/08 16:14:23 INFO storage.MemoryStore: Block broadcast_0 stored as
> values in memory (estimated size 2.1 KB, free 353.3 MB)
> 15/06/08 16:14:42 INFO executor.Executor: Finished task 0.0 in stage 0.0
> (TID 0). 693 bytes result sent to driver
> 15/06/08 16:14:42 INFO executor.CoarseGrainedExecutorBackend: Got assigned
> task 1
> 15/06/08 16:14:42 INFO executor.Executor: Running task 1.0 in stage 0.0
> (TID 1)
> 15/06/08 16:14:56 INFO executor.Executor: Finished task 1.0 in stage 0.0
> (TID 1). 693 bytes result sent to driver
> 15/06/08 16:14:56 INFO executor.CoarseGrainedExecutorBackend: Driver
> commanded a shutdown
> 15/06/08 16:14:56 INFO storage.MemoryStore: MemoryStore cleared
> 15/06/08 16:14:56 INFO storage.BlockManager: BlockManager stopped
> 15/06/08 16:14:56 INFO remote.RemoteActorRefProvider$RemotingTerminator:
> Shutting down remote daemon.
> 15/06/08 16:14:56 INFO remote.RemoteActorRefProvider$RemotingTerminator:
> Remote daemon shut down; proceeding with flushing remote transports.
>
>
> --------------------------------
>
> Thanks&amp;Best regards!
> San.Luo
>
>
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