Along with what Jack said, see this... http://hbase.apache.org/book.html#required_configuration
.. and just double check that you don't have scheduled major compactions going off once a day (the default) On 9/3/11 7:54 PM, "Jack Levin" <[email protected]> wrote: >Make hbase.hregion.max.filesize to be very large. Then your regions >won't split. We use this method when copying 'live' hbase to make a >backup. > >-Jack > >On Sat, Sep 3, 2011 at 4:32 PM, Geoff Hendrey <[email protected]> >wrote: >> Is there a way to prevent regions from splitting while we are running a >> mapreduce job that does a lot of Puts? It seems that there is a lot of >> HDFS activity related to the splitting of regions while my M/R job is >> doing the puts. Is it sensible to disable splitting during the job that >> does lots of Put? Would there be any danger in this (i.e. disabling >> splitting during the job, and re-enabling it when the job completes)? >> >> >> >> I see the hbase.regionserver.thread.splitcompactcheckfrequency could be >> used to make splits happen less frequently, but what I'd really like is >> for splitting to be disabled, then re-enabled later. >> >> >> >> -Geoff >> >>
