StanZhai created SPARK-19532: -------------------------------- Summary: [Core]`DataStreamer for file` threads of DFSOutputStream leak if set `spark.speculation` to true Key: SPARK-19532 URL: https://issues.apache.org/jira/browse/SPARK-19532 Project: Spark Issue Type: Bug Components: Spark Core, SQL Affects Versions: 2.1.0 Reporter: StanZhai Priority: Blocker
When set `spark.speculation` to true, from thread dump page of Executor of WebUI, I found that there are about 1300 threads named "DataStreamer for file /test/data/test_temp/_temporary/0/_temporary/attempt_20170207172435_80750_m_000069_1/part-00069-690407af-0900-46b1-9590-a6d6c696fe68.snappy.parquet" in TIMED_WAITING state. {code} java.lang.Object.wait(Native Method) org.apache.hadoop.hdfs.DFSOutputStream$DataStreamer.run(DFSOutputStream.java:564) {code} The off-heap memory exceeds a lot until Executor exited with OOM exception. This problem occurs only when writing data to the Hadoop(tasks may be killed by Executor during writing). -- This message was sent by Atlassian JIRA (v6.3.15#6346) --------------------------------------------------------------------- To unsubscribe, e-mail: issues-unsubscr...@spark.apache.org For additional commands, e-mail: issues-h...@spark.apache.org