Github user mattf commented on the pull request:
https://github.com/apache/spark/pull/2471#issuecomment-57629838
> @mattf don't know what you mean by "functionality that is already
provided by the system". I'm not aware of HDFS having any way to automatically
do housekeeping of old files.
a system approach means using something like logrotate or a cleaner process
that's run from cron.
such an approach is beneficial in a number of ways, including reducing the
complexity of spark by not duplicating functionality that's already available
in spark's environment - akin to using a standard library for i/o instead of
interacting w/ devices directly. in this case the context for the environment
is the system, where you'll find things like logrotate and cron readily
available.
as for rotating logs in hdfs - i wouldn't expect hdfs to provide such a
feature, because the feature serves a specific use case on top of hdfs. some
searching suggests that there are a few solutions available for doing rotation
or pruning of files in hdfs and points out that
rotating/pruning/cleaning/purging can be done remotely and independently from
spark since hdfs is distributed.
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