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https://issues.apache.org/jira/browse/HDFS-7534?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14248933#comment-14248933
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Kuldeep Kulkarni commented on HDFS-7534:
----------------------------------------
thanks Allen.
it started working after I corrected it like below :
{code}
export HADOOP_NAMENODE_OPTS="-Xloggc:${HADOOP_LOG_DIR}/gc-namenode.log
-verbose:gc -XX:+PrintGCDetails -XX:+PrintGCTimeStamps -XX:+PrintGCDateStamps
-Dhadoop.security.logger=${HADOOP_SECURITY_LOGGER:-INFO,RFAS}
-Dhdfs.audit.logger=${HDFS_AUDIT_LOGGER:-INFO,NullAppender}
$HADOOP_NAMENODE_OPTS";
{code}
> how to enable namenode GC logging
> ---------------------------------
>
> Key: HDFS-7534
> URL: https://issues.apache.org/jira/browse/HDFS-7534
> Project: Hadoop HDFS
> Issue Type: Task
> Reporter: Kuldeep Kulkarni
>
> Hey Team,
> Could you please let me know how to enable GC logging for hadoop namenode. ?
> I tried below method :
> modified HADOOP_NAMENODE_OPTS in /etc/hadoop/conf/hadoop-env.sh as below and
> restarted namenode (HA is configured on cdh 4.7.0 )
> *before modification :*
> {code}
> export
> HADOOP_NAMENODE_OPTS="-Dhadoop.security.logger=${HADOOP_SECURITY_LOGGER:-INFO,RFAS}
> -Dhdfs.audit.logger=${HDFS_AUDIT_LOGGER:-INFO,NullAppender}
> $HADOOP_NAMENODE_OPTS";
> {code}
> *After modification:*
> {code}
> export HADOOP_NAMENODE_OPTS="-Xloggc:%HADOOP_LOG_DIR%/gc-namenode.log
> -verbose:gc -XX:+PrintGCDetails -XX:+PrintGCTimeStamps -XX:+PrintGCDateStamps
> -Dhadoop.security.logger=${HADOOP_SECURITY_LOGGER:-INFO,RFAS}
> -Dhdfs.audit.logger=${HDFS_AUDIT_LOGGER:-INFO,NullAppender}
> $HADOOP_NAMENODE_OPTS";
> {code}
> this method is not working :(
> could you please help me on this.
> Thanks,
> Kuldeep
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