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Allen Wittenauer commented on HDFS-247: --------------------------------------- It would be neat to be able to do this from OIV. > A tool to plot the locations of the blocks of a directory > --------------------------------------------------------- > > Key: HDFS-247 > URL: https://issues.apache.org/jira/browse/HDFS-247 > Project: Hadoop HDFS > Issue Type: New Feature > Reporter: Owen O'Malley > Labels: newbie > > It would be very useful to have a command that we could give a hdfs directory > to, that would use fsck to find the block locations of the data files in that > directory and group them by host and display the distribution graphically. We > did this by hand and it was very for finding a skewed distribution that was > causing performance problems. The tool should also be able to group by rack > id and generate a similar plot. -- This message was sent by Atlassian JIRA (v6.2#6252)