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From "chao (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (KAFKA-4844) kafka is holding open file descriptors
Date Tue, 07 Mar 2017 05:56:33 GMT

    [ https://issues.apache.org/jira/browse/KAFKA-4844?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15898793#comment-15898793
] 

chao commented on KAFKA-4844:
-----------------------------

In fact , it is vert critical issue ,because kafka hold very big file  ,but we can not delete
except we stop Kafka process 

This issue was happened on centos 5.8 and centos 6.6.  NFS version looks 3 

 /nas/kafka_logs nfs rw,relatime,vers=3,rsize=65536,wsize=65536,namlen=255,hard,proto=tcp,timeo=600,retrans=2,sec=sys,mountaddr=XX.XX.XX.XX,mountvers=3,mountport=635,mountproto=udp,local_lock=none,addr=XX.XX.XX.XX
0 0

$ cat /etc/redhat-release
CentOS release 6.6 (Final)

> kafka is holding open file descriptors
> --------------------------------------
>
>                 Key: KAFKA-4844
>                 URL: https://issues.apache.org/jira/browse/KAFKA-4844
>             Project: Kafka
>          Issue Type: Bug
>    Affects Versions: 0.9.0.1
>            Reporter: chao
>            Priority: Critical
>
> We found strange issue on Kafka 0.9.0.1 , kafka is holding opne file descriptors , and
not allowing disk space to be reclaimed
> my question:
> 1. what does file (nfsXXXXX) mean ??? 
> 2. why kafka is holding file ?? 
> $ sudo lsof /nas/kafka_logs/kafka/Order-6/.nfs0000000004550ffc0000bd61
> COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAME
> java 97465 kafka mem REG 0,25 10485760 72683516 /nas/kafka_logs/kafka/Order-6/.nfs0000000004550ffc0000bd61



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