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From hzwangxx <whwangxingx...@163.com>
Subject Too many file handler in CLOSE_WAIT
Date Mon, 23 Dec 2013 12:26:54 GMT
Hi, 
	I use the shell script “lsof -p rs_pid | grep -c ‘CLOSE_WAIT” on region server,and
find a serious problem that this count is increasing day by day. 
like this:
java    16619 hadoop  191u  IPv6           36668236       0t0      TCP hadoop307.fd.edu.cn:36826->hadoop253.fd.edu.cn:1004
(CLOSE_WAIT)
java    16619 hadoop  192u  IPv6           31628157       0t0      TCP hadoop307.fd.edu.cn:40448->hadoop307.fd.edu.cn:1004
(CLOSE_WAIT)
java    16619 hadoop  193u  IPv6           31065376       0t0      TCP hadoop307.fd.edu.cn:47862->hadoop307.fd.edu.cn:1004
(CLOSE_WAIT)
java    16619 hadoop  194u  IPv6           31197715       0t0      TCP hadoop307.fd.edu.cn:52295->hadoop307.fd.edu.cn:1004
(CLOSE_WAIT)
java    16619 hadoop  195u  IPv6           31650762       0t0      TCP hadoop307.fd.edu.cn:41773->hadoop307.fd.edu.cn:1004
(CLOSE_WAIT)
java    16619 hadoop  196u  IPv6           60713276       0t0      TCP hadoop307.fd.edu.cn:40648->hadoop254.fd.edu.cn:1004
(CLOSE_WAIT)
java    16619 hadoop  197u  IPv6           31717870       0t0      TCP hadoop307.fd.edu.cn:45541->hadoop307.fd.edu.cn:1004
(CLOSE_WAIT)
java    16619 hadoop  198u  IPv6           31003207       0t0      TCP hadoop307.fd.edu.cn:46860->hadoop307.fd.edu.cn:1004
(CLOSE_WAIT)
java    16619 hadoop  199u  IPv6           29085342       0t0      TCP hadoop307.fd.edu.cn:45035->hadoop253.fd.edu.cn:1004
(CLOSE_WAIT)
java    16619 hadoop  200u  IPv6           29157438       0t0      TCP hadoop307.fd.edu.cn:45036->hadoop253.fd.edu.cn:1004
(CLOSE_WAIT)
java    16619 hadoop  201u  IPv6           29160720       0t0      TCP hadoop307.fd.edu.cn:45037->hadoop253.fd.edu.cn:1004
(CLOSE_WAIT)
java    16619 hadoop  202u  IPv6           64609593       0t0      TCP hadoop307.fd.edu.cn:35173->hadoop307.fd.edu.cn:1004
(CLOSE_WAIT)
java    16619 hadoop  203u  IPv6           31521701       0t0      TCP hadoop307.fd.edu.cn:37323->hadoop307.fd.edu.cn:1004
(CLOSE_WAIT)
java    16619 hadoop  204u  IPv6           31501641       0t0      TCP hadoop307.fd.edu.cn:35527->hadoop307.fd.edu.cn:1004
(CLOSE_WAIT)
java    16619 hadoop  205u  IPv6           29769981       0t0      TCP hadoop307.fd.edu.cn:55582->hadoop307.fd.edu.cn:1004
(CLOSE_WAIT)
	My hdfs version is hadoop-2.0-cdh4.2.1 and hbase is 0.94-cdh4.2.1.
Thanks~
Best Regards.

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