[
https://issues.apache.org/jira/browse/SPARK-6738?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Hong Shen updated SPARK-6738:
-----------------------------
Description:
ExternalAppendOnlyMap spill 2.2 GB data to disk:
{code}
15/04/07 20:27:37 INFO collection.ExternalAppendOnlyMap: Thread 54 spilling
in-memory map of 2.2 GB to disk (61 times so far)
15/04/07 20:27:37 INFO collection.ExternalAppendOnlyMap:
/data11/yarnenv/local/usercache/spark/appcache/application_1423737010718_40455651/spark-local-20150407202613-4e80/11/temp_local_fdb4a583-5d13-4394-bccb-e1217d5db812
{code}
But the file size is only 2.2M.
{code}
ll -h
/data11/yarnenv/local/usercache/spark/appcache/application_1423737010718_40455651/spark-local-20150407202613-4e80/11/
total 2.2M
-rw-r----- 1 spark users 2.2M Apr 7 20:27
temp_local_fdb4a583-5d13-4394-bccb-e1217d5db812
{code}
The GC log show that the jvm memory is less than 1GB.
{code}
2015-04-07T20:27:08.023+0800: [GC 981981K->55363K(3961344K), 0.0341720 secs]
2015-04-07T20:27:14.483+0800: [GC 987523K->53737K(3961344K), 0.0252660 secs]
2015-04-07T20:27:20.793+0800: [GC 985897K->56370K(3961344K), 0.0606460 secs]
2015-04-07T20:27:27.553+0800: [GC 988530K->59089K(3961344K), 0.0651840 secs]
2015-04-07T20:27:34.067+0800: [GC 991249K->62153K(3961344K), 0.0288460 secs]
2015-04-07T20:27:40.180+0800: [GC 994313K->61344K(3961344K), 0.0388970 secs]
2015-04-07T20:27:46.490+0800: [GC 993504K->59915K(3961344K), 0.0235150 secs]
{code}
The estimateSize is hugh difference with spill file size
was:
ExternalAppendOnlyMap spill 1100M data to disk:
{code}
15/04/07 16:39:48 INFO collection.ExternalAppendOnlyMap: Thread 51 spilling
in-memory map of 1106.5 MB to disk (12 times so far)
/data11/yarnenv/local/usercache/spark/appcache/application_1423737010718_40308573/spark-local-20150407163931-994b/30/temp_local_e4347165-6263-4678-9f1d-67ad4bcd8fb5
15/04/07 16:39:49 INFO collection.ExternalAppendOnlyMap: Thread 51 spilling
in-memory map of 1106.3 MB to disk (13 times so far)
/data6/yarnenv/local/usercache/spark/appcache/application_1423737010718_40308573/spark-local-20150407163931-1e29/26/temp_local_76f9900b-1b3d-4cef-b3a2-6afcde14bbd9
15/04/07 16:39:49 INFO collection.ExternalAppendOnlyMap: Thread 51 spilling
in-memory map of 1105.8 MB to disk (14 times so far)
/data7/yarnenv/local/usercache/spark/appcache/application_1423737010718_40308573/spark-local-20150407163931-f883/26/temp_local_3ade0aec-ac1d-469d-bc99-b6fa87cb649b
15/04/07 16:39:50 INFO collection.ExternalAppendOnlyMap: Thread 51 spilling
in-memory map of 1106.8 MB to disk (15 times so far)
{code}
But the file size is only 1.1M.
{code}
[tdwadmin@tdw-10-215-149-231
~/tdwenv/tdwgaia/logs/container-logs/application_1423737010718_40308573/container_1423737010718_40308573_01_000008]$
ll -h
/data7/yarnenv/local/usercache/spark/appcache/application_1423737010718_40308573/spark-local-20150407163931-f883/26/temp_local_3ade0aec-ac1d-469d-bc99-b6fa87cb649b
-rw-r----- 1 spark users 1.1M Apr 7 16:39
/data7/yarnenv/local/usercache/spark/appcache/application_1423737010718_40308573/spark-local-20150407163931-f883/26/temp_local_3ade0aec-ac1d-469d-bc99-b6fa87cb649b
{code}
Here are the other spilled files.
{code}
[tdwadmin@tdw-10-215-149-231
~/tdwenv/tdwgaia/logs/container-logs/application_1423737010718_40308573/container_1423737010718_40308573_01_000008]$
ll -h
/data3/yarnenv/local/usercache/spark/appcache/application_1423737010718_40308573/spark-local-20150407163931-fe54/*
/data3/yarnenv/local/usercache/spark/appcache/application_1423737010718_40308573/spark-local-20150407163931-fe54/09:
total 1.1M
-rw-r----- 1 spark users 1.1M Apr 7 16:39
temp_local_3a568e10-3997-4d13-adf1-e8dfe4ba4727
/data3/yarnenv/local/usercache/spark/appcache/application_1423737010718_40308573/spark-local-20150407163931-fe54/18:
total 2.2M
-rw-r----- 1 spark users 1.1M Apr 7 16:41
temp_local_66c0df48-5d79-448b-8989-84ce1a5507d0
-rw-r----- 1 spark users 1.1M Apr 7 16:39
temp_local_f6870214-bfd5-47b2-b0b9-37194b55761b
/data3/yarnenv/local/usercache/spark/appcache/application_1423737010718_40308573/spark-local-20150407163931-fe54/1a:
total 1.1M
-rw-r----- 1 spark users 1.1M Apr 7 16:40
temp_local_ba1712d2-0eb8-4833-9fa6-a87ee670826c
/data3/yarnenv/local/usercache/spark/appcache/application_1423737010718_40308573/spark-local-20150407163931-fe54/1b:
total 1.1M
-rw-r----- 1 spark users 1.1M Apr 7 16:41
temp_local_1d1df5b7-846c-4bcd-a9de-c328e50e62db
/data3/yarnenv/local/usercache/spark/appcache/application_1423737010718_40308573/spark-local-20150407163931-fe54/1f:
total 1.1M
-rw-r----- 1 spark users 1.1M Apr 7 16:41
temp_local_38c6a144-b588-49b1-b0f0-b91b31c2e85f
/data3/yarnenv/local/usercache/spark/appcache/application_1423737010718_40308573/spark-local-20150407163931-fe54/20:
total 1.1M
-rw-r----- 1 spark users 1.1M Apr 7 16:40
temp_local_d816a301-7520-4b6e-8866-bc445f04f0c9
/data3/yarnenv/local/usercache/spark/appcache/application_1423737010718_40308573/spark-local-20150407163931-fe54/24:
total 1.1M
-rw-r----- 1 spark users 1.1M Apr 7 16:40
temp_local_7a3619cf-20e1-4815-8b1f-faeefde40d73
/data3/yarnenv/local/usercache/spark/appcache/application_1423737010718_40308573/spark-local-20150407163931-fe54/2e:
total 2.2M
-rw-r----- 1 spark users 1.1M Apr 7 16:39
temp_local_1e366a65-ced7-4b17-a085-5f873ff6dc43
-rw-r----- 1 spark users 1.1M Apr 7 16:41
temp_local_6772b815-11ee-413a-bc6c-d0dc9cbffc51
{code}
The estimateSize is hugh difference with spill file size
> EstimateSize is difference with spill file size
> ------------------------------------------------
>
> Key: SPARK-6738
> URL: https://issues.apache.org/jira/browse/SPARK-6738
> Project: Spark
> Issue Type: Bug
> Components: Spark Core
> Affects Versions: 1.2.0
> Reporter: Hong Shen
>
> ExternalAppendOnlyMap spill 2.2 GB data to disk:
> {code}
> 15/04/07 20:27:37 INFO collection.ExternalAppendOnlyMap: Thread 54 spilling
> in-memory map of 2.2 GB to disk (61 times so far)
> 15/04/07 20:27:37 INFO collection.ExternalAppendOnlyMap:
> /data11/yarnenv/local/usercache/spark/appcache/application_1423737010718_40455651/spark-local-20150407202613-4e80/11/temp_local_fdb4a583-5d13-4394-bccb-e1217d5db812
> {code}
> But the file size is only 2.2M.
> {code}
> ll -h
> /data11/yarnenv/local/usercache/spark/appcache/application_1423737010718_40455651/spark-local-20150407202613-4e80/11/
> total 2.2M
> -rw-r----- 1 spark users 2.2M Apr 7 20:27
> temp_local_fdb4a583-5d13-4394-bccb-e1217d5db812
> {code}
> The GC log show that the jvm memory is less than 1GB.
> {code}
> 2015-04-07T20:27:08.023+0800: [GC 981981K->55363K(3961344K), 0.0341720 secs]
> 2015-04-07T20:27:14.483+0800: [GC 987523K->53737K(3961344K), 0.0252660 secs]
> 2015-04-07T20:27:20.793+0800: [GC 985897K->56370K(3961344K), 0.0606460 secs]
> 2015-04-07T20:27:27.553+0800: [GC 988530K->59089K(3961344K), 0.0651840 secs]
> 2015-04-07T20:27:34.067+0800: [GC 991249K->62153K(3961344K), 0.0288460 secs]
> 2015-04-07T20:27:40.180+0800: [GC 994313K->61344K(3961344K), 0.0388970 secs]
> 2015-04-07T20:27:46.490+0800: [GC 993504K->59915K(3961344K), 0.0235150 secs]
> {code}
> The estimateSize is hugh difference with spill file size
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