+1 On Fri, Jul 17, 2015 at 2:01 AM, Jingcheng Du <[email protected]> wrote:
> Hi all, > > The Moderate Object Storage (MOB) feature (HBASE-11339[1]) is modified I/O > and compaction path that allows individual moderately sized values > (100KB-10MB) to be stored so that write amplification is reduced when > compared to the normal I/O path. MOB is defined in the column family > and it is almost isolated with other components, the features and > performance > cannot be effected in normal columns. A detailed design doc and user guide > can > be found on the hbase-11339 jira. The code reside in the feature branch > hbase-11339[2], and now the latest mega patch for trunk is > available in RB[3]. > > Jon had brought this in another DISCUSSION thread some days ago. We > collected > all the feedbacks there and had tried to incorporate them. > > Some improvements, like encryption of mob files, finding > corrupt mob files and dangling reference cells, have been implemented. > > The other point that was discussed is the use of MR for doing the MOB > compaction in phase-1 > of the implementation. Now the dependency is removed, we have an inbuilt > MOB > compaction that > can be run automatically and it does not need MR anymore. Still the MR > compaction is provided > as a tool for users. > > Considering the fact that the concerns from the discussion thread have been > addressed, we are putting > the merge to trunk up for a vote. > [] +1 proceed with merge to trunk. > [] 0 no opinion > [] -1 do not merge to trunk, because ... > > Our current merge vote policy requires at least 3 +1s from committers to > move forward[4]. The vote runs for 72 hours (the weekends are excluded), > and > it will be closed at the midnight of > Tuesday July 21 PDT. > > Thanks, > Jingcheng, Jon, Ram and Anoop. > > [1]: https://issues.apache.org/jira/browse/HBASE-11339 > [2]: https://github.com/apache/hbase/tree/hbase-11339 > [3]: https://reviews.apache.org/r/36391/ > [4]: https://hbase.apache.org/book.html#_decisions > > > > -- > View this message in context: > http://apache-hbase.679495.n3.nabble.com/VOTE-Merge-branch-hbase-11339-HBase-MOB-to-trunk-tp4073308.html > Sent from the HBase Developer mailing list archive at Nabble.com. > -- Best regards, - Andy Problems worthy of attack prove their worth by hitting back. - Piet Hein (via Tom White)
