hi akhil
Not exactly ,the task took 54s to finish, started from 16:14:02 and ended at
16:14:56.
within this 54s , it needs 19s to store value in memory, which started from
16:14:23 and ended at 16:14:42. I think this is the most time-wasting part of
this task ,also unreasonable.You may check the log attached in previous mail.
and here is my codes:
import org.apache.spark._
object GeneCompare3 {
def main(args: Array[String]) {
//i:piece number, j:user number
val i = args(0).toInt
val j = args(1)
val conf = new SparkConf().setAppName("CompareGenePiece " + i + " of User "
+ j).setMaster("spark://slave3:7077").set("spark.executor.memory", "2g")
val sc = new SparkContext(conf)
println("start to compare gene")
val runmodifyshell2 = List("run", "sort.sh")
val runmodifyshellRDD2 = sc.makeRDD(runmodifyshell2)
val pipeModify2 = runmodifyshellRDD2.pipe("sh /opt/sh/bin/sort.sh
/opt/data/shellcompare/db/chr" + i + ".txt /opt/data/shellcompare/data/user" +
j + "/pgs/sample/samplechr" + i + ".txt /opt/data/shellcompare/data/user" + j +
"/pgs/intermediateResult/result" + i + ".txt 600")
pipeModify2.collect() sc.stop()
}
}
--------------------------------
Thanks&Best regards!
San.Luo
----- 原始邮件 -----
发件人：Akhil Das <[email protected]>
收件人：罗辉 <[email protected]>
抄送人：user <[email protected]>
主题：Re: Re: How to decrease the time of storing block in memory
日期：2015年06月09日 16点51分
Is it that task taking 19s? It won't be simply taking 19s to store 2KB of data
into memory there could be other operations happening too (the transformations
that you are doing), It would be good if you can paste the code snippet that
you are running to have a better understanding.ThanksBest Regards
On Tue, Jun 9, 2015 at 2:09 PM, <[email protected]> wrote:
Only 1 minor GC, 0.07s.
--------------------------------
Thanks&Best regards!
San.Luo
----- 原始邮件 -----
发件人：Akhil Das <[email protected]>
收件人：罗辉 <[email protected]>
抄送人：user <[email protected]>
主题：Re: How to decrease the time of storing block in memory
日期：2015年06月09日 15点02分
May be you should check in your driver UI and see if there's any GC time
involved etc. ThanksBest Regards
On Mon, Jun 8, 2015 at 5:45 PM, <[email protected]> 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&Best regards!
San.Luo
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