Thanks for spotting this. Do you mind filing a Jira ?
On Jan 5, 2012, at 3:02 AM, Mikael Sitruk <[email protected]> wrote: > Hi all > > It seems that the book has some inconsistencies regarding the way to > disable major compactions > > According to the book in chapter 2.6.1.1. HBase Default Configuration > > hbase.hregion.majorcompaction - The time (in miliseconds) between 'major' > compactions of all HStoreFiles in a region. Default: 1 day. *Set to 0 to > disable automated major compactions*. > > Default: 86400000 ( > http://hbase.apache.org/book.html#hbase_default_configurations) > > According to the book at chapter 2.8.2.8. Managed Compactions > > "A common administrative technique is to manage major compactions manually, > rather than letting HBase do it. By default, > HConstants.MAJOR_COMPACTION_PERIOD is one day and major compactions may > kick in when you least desire it - especially on a busy system. *To "turn > off" automatic major compactions set the value to Long.MAX_VALUE.*" > According to the code org.apache.hadoop.hbase.regionserver.Store.java, "0" > is the right answer. > > > Regards, > Mikael.S
