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wangkang commented on SPARK-3563: --------------------------------- I meet the same question. A user runs a spark streaming job, the shuffle and rdd data does not cleaned in ContextCleaner until the application end. I try to print the driver's jstack info, finding the broadcast object can be cleaned. But the rdd and shuffle data always can not cleaned. I also try to trigger the driver a full GC(GC meets expectation), but ContextCleaner doesn't has any cleaned RDD or cleaned Shuffle log. Is there any other reason?thanks. > Shuffle data not always be cleaned > ---------------------------------- > > Key: SPARK-3563 > URL: https://issues.apache.org/jira/browse/SPARK-3563 > Project: Spark > Issue Type: Bug > Components: DStreams > Affects Versions: 1.0.2 > Reporter: shenh062326 > Priority: Major > > In our cluster, when we run a spark streaming job, after running for many > hours, the shuffle data seems not all be cleaned, here is the shuffle data: > -rw-r----- 1 tdwadmin users 23948 Sep 17 13:21 shuffle_132_34_0 > -rw-r----- 1 tdwadmin users 18237 Sep 17 13:32 shuffle_143_22_1 > -rw-r----- 1 tdwadmin users 22934 Sep 17 13:35 shuffle_146_15_0 > -rw-r----- 1 tdwadmin users 27666 Sep 17 13:35 shuffle_146_36_1 > -rw-r----- 1 tdwadmin users 12864 Sep 17 14:05 shuffle_176_12_0 > -rw-r----- 1 tdwadmin users 22115 Sep 17 14:05 shuffle_176_33_1 > -rw-r----- 1 tdwadmin users 15666 Sep 17 14:21 shuffle_192_0_1 > -rw-r----- 1 tdwadmin users 13916 Sep 17 14:38 shuffle_209_53_0 > -rw-r----- 1 tdwadmin users 20031 Sep 17 14:41 shuffle_212_26_0 > -rw-r----- 1 tdwadmin users 15158 Sep 17 14:41 shuffle_212_47_1 > -rw-r----- 1 tdwadmin users 42880 Sep 17 12:12 shuffle_63_1_1 > -rw-r----- 1 tdwadmin users 32030 Sep 17 12:14 shuffle_65_40_0 > -rw-r----- 1 tdwadmin users 34477 Sep 17 12:33 shuffle_84_2_1 > The shuffle data of stage 63, 65, 84, 132... are not cleaned. > In ContextCleaner, it maintains a weak reference for each RDD, > ShuffleDependency, and Broadcast of interest, to be processed when the > associated object goes out of scope of the application. Actual cleanup is > performed in a separate daemon thread. > There must be some reference for ShuffleDependency , and it's hard to find > out. -- This message was sent by Atlassian Jira (v8.3.4#803005) --------------------------------------------------------------------- To unsubscribe, e-mail: issues-unsubscr...@spark.apache.org For additional commands, e-mail: issues-h...@spark.apache.org