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From "Anu Engineer (JIRA)" <j...@apache.org>
Subject [jira] [Resolved] (HDFS-12936) java.lang.OutOfMemoryError: unable to create new native thread
Date Mon, 18 Dec 2017 18:41:00 GMT

     [ https://issues.apache.org/jira/browse/HDFS-12936?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Anu Engineer resolved HDFS-12936.
---------------------------------
    Resolution: Not A Bug

> java.lang.OutOfMemoryError: unable to create new native thread
> --------------------------------------------------------------
>
>                 Key: HDFS-12936
>                 URL: https://issues.apache.org/jira/browse/HDFS-12936
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: datanode
>    Affects Versions: 2.6.0
>         Environment: CDH5.12
> hadoop2.6
>            Reporter: Jepson
>   Original Estimate: 96h
>  Remaining Estimate: 96h
>
> I configure the max user processes  65535 with any user ,and the datanode memory is 8G.
> When a log of data was been writeen,the datanode was been shutdown.
> But I can see the memory use only < 1000M.
> Please to see https://pan.baidu.com/s/1o7BE0cy
> *DataNode shutdown error log:*  
> {code:java}
> 2017-12-17 23:58:14,422 INFO org.apache.hadoop.hdfs.server.datanode.DataNode: PacketResponder:
BP-1437036909-192.168.17.36-1509097205664:blk_1074725940_987917, type=HAS_DOWNSTREAM_IN_PIPELINE
terminating
> 2017-12-17 23:58:31,425 ERROR org.apache.hadoop.hdfs.server.datanode.DataNode: DataNode
is out of memory. Will retry in 30 seconds.
> java.lang.OutOfMemoryError: unable to create new native thread
> 	at java.lang.Thread.start0(Native Method)
> 	at java.lang.Thread.start(Thread.java:714)
> 	at org.apache.hadoop.hdfs.server.datanode.DataXceiverServer.run(DataXceiverServer.java:154)
> 	at java.lang.Thread.run(Thread.java:745)
> 2017-12-17 23:59:01,426 ERROR org.apache.hadoop.hdfs.server.datanode.DataNode: DataNode
is out of memory. Will retry in 30 seconds.
> java.lang.OutOfMemoryError: unable to create new native thread
> 	at java.lang.Thread.start0(Native Method)
> 	at java.lang.Thread.start(Thread.java:714)
> 	at org.apache.hadoop.hdfs.server.datanode.DataXceiverServer.run(DataXceiverServer.java:154)
> 	at java.lang.Thread.run(Thread.java:745)
> 2017-12-17 23:59:05,520 ERROR org.apache.hadoop.hdfs.server.datanode.DataNode: DataNode
is out of memory. Will retry in 30 seconds.
> java.lang.OutOfMemoryError: unable to create new native thread
> 	at java.lang.Thread.start0(Native Method)
> 	at java.lang.Thread.start(Thread.java:714)
> 	at org.apache.hadoop.hdfs.server.datanode.DataXceiverServer.run(DataXceiverServer.java:154)
> 	at java.lang.Thread.run(Thread.java:745)
> 2017-12-17 23:59:31,429 INFO org.apache.hadoop.hdfs.server.datanode.DataNode: Receiving
BP-1437036909-192.168.17.36-1509097205664:blk_1074725951_987928 src: /192.168.17.54:40478
dest: /192.168.17.48:50010
> {code}



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