HBASE-13177 Document compact and major_compact HBase shell commands and Admin APIs
Project: http://git-wip-us.apache.org/repos/asf/hbase/repo Commit: http://git-wip-us.apache.org/repos/asf/hbase/commit/8c1edeb2 Tree: http://git-wip-us.apache.org/repos/asf/hbase/tree/8c1edeb2 Diff: http://git-wip-us.apache.org/repos/asf/hbase/diff/8c1edeb2 Branch: refs/heads/master Commit: 8c1edeb2b8d8da6058e78df2ec907ec4df986012 Parents: 33a6a81 Author: Misty Stanley-Jones <[email protected]> Authored: Mon Mar 9 10:00:21 2015 +1000 Committer: Misty Stanley-Jones <[email protected]> Committed: Mon Mar 9 10:00:55 2015 +1000 ---------------------------------------------------------------------- src/main/asciidoc/_chapters/hbase_mob.adoc | 15 +++++++++++++++ 1 file changed, 15 insertions(+) ---------------------------------------------------------------------- http://git-wip-us.apache.org/repos/asf/hbase/blob/8c1edeb2/src/main/asciidoc/_chapters/hbase_mob.adoc ---------------------------------------------------------------------- diff --git a/src/main/asciidoc/_chapters/hbase_mob.adoc b/src/main/asciidoc/_chapters/hbase_mob.adoc index 0882de8..52f20f6 100644 --- a/src/main/asciidoc/_chapters/hbase_mob.adoc +++ b/src/main/asciidoc/_chapters/hbase_mob.adoc @@ -120,6 +120,21 @@ Because there can be a large number of MOB files at any time, as compared to the === MOB Optimization Tasks +==== Manually Compacting MOB Files + +To manually compact MOB files, rather than waiting for the <<mob.cache.configure,configuration>> to trigger compaction, use the `compact_mob` or `major_compact_mob` HBase shell commands. These commands require the first argument to be the table name, and take an optional column family as the second argument. If the column family is omitted, all MOB-enabled column families are compacted. + +---- +hbase> compact_mob 't1', 'c1' +hbase> compact_mob 't1' +hbase> major_compact_mob 't1', 'c1' +hbase> major_compact_mob 't1' +---- + +These commands are also available via `Admin.compactMob` and `Admin.majorCompactMob` methods. + +==== MOB Sweeper + HBase MOB currently relies on a MapReduce job called the Sweeper tool for optimization. The Sweeper tool oalesces small MOB files or MOB files with many deletions or updates. A native MOB compaction tool is still in testing. To configure the Sweeper tool, set the following options: [source,xml]
