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dhruba borthakur commented on MAPREDUCE-1213: --------------------------------------------- One option is to rename the currentworkdir to a temporary location and then delete these file asynchronously via the technique used in HDFS-611 > TaskTrackers restart is very slow because ti deletes distributed cache > directory synchronously > ---------------------------------------------------------------------------------------------- > > Key: MAPREDUCE-1213 > URL: https://issues.apache.org/jira/browse/MAPREDUCE-1213 > Project: Hadoop Map/Reduce > Issue Type: Bug > Affects Versions: 0.20.1 > Reporter: dhruba borthakur > > We are seeing that when we restart a tasktracker, it tries to recursively > delete all the file in the distributed cache. It invoked > FileUtil.fullyDelete() which is very very slow. This means that the > TaskTracker cannot join the cluster for an extended period of time (upto 2 > hours for us). The problem is acute if the number of files in a distributed > cache is a few-thousands. -- This message is automatically generated by JIRA. - You can reply to this email to add a comment to the issue online.