This directory is used by the RegionServers durring compactions to store intermediate data. See:
$ git grep 'hbase.tmp.dir' hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/CompactionTool.java: private final static String CONF_TMP_DIR = "hbase.tmp.dir"; hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/HRegion.java: final Path logdir = new Path(c.get("hbase.tmp.dir")); ... Both of these uses indicate that it is a single path. I imagine you'd get exceptions if you attempted to feed it a comma-delimited list of paths. -n On Mon, Dec 17, 2012 at 3:19 PM, anil gupta <anilgupt...@gmail.com> wrote: > Hi All, > > I am trying to figure out the exact roll of "hbase.tmp.dir" in HBase but i > could not find any detailed reference on HBase wiki and mailing list > archives. Can anybody tell me for which purpose hbase.tmp.dir is used? Is > it a comma separated value that can take multiple directories? Any > reference document on it would be highly appreciated? > > -- > Thanks & Regards, > Anil Gupta >