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Posted to user@hadoop.apache.org by Karim Awara <ka...@kaust.edu.sa> on 2013/11/04 10:24:44 UTC
trace class calls in hadoop hdfs
Hi,
I want to trace the calls that both the DataNode and the NameNode do when I
execute a shell command on the hdfs such as (hadoop dfs -put {src} {dst}).
Any idea how to do that?
; tracing including the data node asking the name node for the blockID..
also the class where datanode use to determine the replica datanodes in the
pipe ..etc
--
Best Regards,
Karim Ahmed Awara
--
------------------------------
This message and its contents, including attachments are intended solely
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Re: trace class calls in hadoop hdfs
Posted by Bing Jiang <ji...@gmail.com>.
I think you can try to use jdb, which exists in $JAVA_HOME/bin.
Regards
Bing
2013/11/4 Karim Awara <ka...@kaust.edu.sa>
> Hi,
>
> I want to trace the calls that both the DataNode and the NameNode do when
> I execute a shell command on the hdfs such as (hadoop dfs -put {src}
> {dst}). Any idea how to do that?
>
>
> ; tracing including the data node asking the name node for the blockID..
> also the class where datanode use to determine the replica datanodes in the
> pipe ..etc
>
> --
> Best Regards,
> Karim Ahmed Awara
>
> ------------------------------
> This message and its contents, including attachments are intended solely
> for the original recipient. If you are not the intended recipient or have
> received this message in error, please notify me immediately and delete
> this message from your computer system. Any unauthorized use or
> distribution is prohibited. Please consider the environment before printing
> this email.
--
Bing Jiang
Tel：(86)134-2619-1361
weibo: http://weibo.com/jiangbinglover
BLOG: www.binospace.com
BLOG: http://blog.sina.com.cn/jiangbinglover
Focus on distributed computing, HDFS/HBase
Re: trace class calls in hadoop hdfs
Posted by Bing Jiang <ji...@gmail.com>.
I think you can try to use jdb, which exists in $JAVA_HOME/bin.
Regards
Bing
2013/11/4 Karim Awara <ka...@kaust.edu.sa>
> Hi,
>
> I want to trace the calls that both the DataNode and the NameNode do when
> I execute a shell command on the hdfs such as (hadoop dfs -put {src}
> {dst}). Any idea how to do that?
>
>
> ; tracing including the data node asking the name node for the blockID..
> also the class where datanode use to determine the replica datanodes in the
> pipe ..etc
>
> --
> Best Regards,
> Karim Ahmed Awara
>
> ------------------------------
> This message and its contents, including attachments are intended solely
> for the original recipient. If you are not the intended recipient or have
> received this message in error, please notify me immediately and delete
> this message from your computer system. Any unauthorized use or
> distribution is prohibited. Please consider the environment before printing
> this email.
--
Bing Jiang
Tel：(86)134-2619-1361
weibo: http://weibo.com/jiangbinglover
BLOG: www.binospace.com
BLOG: http://blog.sina.com.cn/jiangbinglover
Focus on distributed computing, HDFS/HBase
Re: trace class calls in hadoop hdfs
Posted by Bing Jiang <ji...@gmail.com>.
I think you can try to use jdb, which exists in $JAVA_HOME/bin.
Regards
Bing
2013/11/4 Karim Awara <ka...@kaust.edu.sa>
> Hi,
>
> I want to trace the calls that both the DataNode and the NameNode do when
> I execute a shell command on the hdfs such as (hadoop dfs -put {src}
> {dst}). Any idea how to do that?
>
>
> ; tracing including the data node asking the name node for the blockID..
> also the class where datanode use to determine the replica datanodes in the
> pipe ..etc
>
> --
> Best Regards,
> Karim Ahmed Awara
>
> ------------------------------
> This message and its contents, including attachments are intended solely
> for the original recipient. If you are not the intended recipient or have
> received this message in error, please notify me immediately and delete
> this message from your computer system. Any unauthorized use or
> distribution is prohibited. Please consider the environment before printing
> this email.
--
Bing Jiang
Tel：(86)134-2619-1361
weibo: http://weibo.com/jiangbinglover
BLOG: www.binospace.com
BLOG: http://blog.sina.com.cn/jiangbinglover
Focus on distributed computing, HDFS/HBase
Re: trace class calls in hadoop hdfs
Posted by Bing Jiang <ji...@gmail.com>.
I think you can try to use jdb, which exists in $JAVA_HOME/bin.
Regards
Bing
2013/11/4 Karim Awara <ka...@kaust.edu.sa>
> Hi,
>
> I want to trace the calls that both the DataNode and the NameNode do when
> I execute a shell command on the hdfs such as (hadoop dfs -put {src}
> {dst}). Any idea how to do that?
>
>
> ; tracing including the data node asking the name node for the blockID..
> also the class where datanode use to determine the replica datanodes in the
> pipe ..etc
>
> --
> Best Regards,
> Karim Ahmed Awara
>
> ------------------------------
> This message and its contents, including attachments are intended solely
> for the original recipient. If you are not the intended recipient or have
> received this message in error, please notify me immediately and delete
> this message from your computer system. Any unauthorized use or
> distribution is prohibited. Please consider the environment before printing
> this email.
--
Bing Jiang
Tel：(86)134-2619-1361
weibo: http://weibo.com/jiangbinglover
BLOG: www.binospace.com
BLOG: http://blog.sina.com.cn/jiangbinglover
Focus on distributed computing, HDFS/HBase