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From Ted Yu <yuzhih...@gmail.com>
Subject Re: HRegionInfo.createRegionName()
Date Tue, 16 Nov 2010 00:44:42 GMT
Can someone tell me when false should be specified for newFormat ?

Thanks

On Mon, Nov 15, 2010 at 2:15 PM, Stack <stack@duboce.net> wrote:

> I made an issue to cover J-D's suggestion, HBASE-3236, that lists what
> Ted is looking for.  Its pegged against 0.90.1 but if a new RC, we can
> include it then.
>
> St.Ack
>
>
>
> On Mon, Nov 15, 2010 at 9:23 PM, Jean-Daniel Cryans <jdcryans@apache.org>
> wrote:
> > I think it's worth going at greater lengths to document that kind of
> > "breakage", maybe a page in the book? Stuff like "What's new" and
> > "Incompatibilities" that we can easily link to.
> >
> > J-D
> >
> > On Mon, Nov 15, 2010 at 12:38 PM, Ryan Rawson <ryanobjc@gmail.com>
> wrote:
> >> That is correct, those classes were deprecated in 0.20, and now gone in
> 0.90.
> >>
> >> Now you will want to use HTable and Result.
> >>
> >> Also Filter.getNextKeyHint() is an implementation detail, have a look
> >> at the other filters to get a sense of what it does.
> >>
> >> On Mon, Nov 15, 2010 at 12:33 PM, Ted Yu <yuzhihong@gmail.com> wrote:
> >>> Just a few findings when I tried to compile our 0.20.6 based code with
> this
> >>> new release:
> >>>
> >>> HConstants is final class now instead of interface
> >>> RowFilterInterface is gone
> >>> org.apache.hadoop.hbase.io.Cell is gone
> >>> org.apache.hadoop.hbase.io.RowResult is gone
> >>> constructor
> >>>
> HColumnDescriptor(byte[],int,java.lang.String,boolean,boolean,int,boolean)
> >>> is gone
> >>> Put.setTimeStamp() is gone
> >>> org.apache.hadoop.hbase.filter.Filter has added
> >>> getNextKeyHint(org.apache.hadoop.hbase.KeyValue)
> >>>
> >>> If you know the alternative to some of the old classes, please share.
> >>>
> >>> On Mon, Nov 15, 2010 at 2:51 AM, Stack <stack@duboce.net> wrote:
> >>>
> >>>> The first hbase 0.90.0 release candidate is available for download:
> >>>>
> >>>>  http://people.apache.org/~stack/hbase-0.90.0-candidate-0/<http://people.apache.org/%7Estack/hbase-0.90.0-candidate-0/>
> <http://people.apache.org/%7Estack/hbase-0.90.0-candidate-0/>
> >>>>
> >>>> HBase 0.90.0 is the major HBase release that follows 0.20.0 and the
> >>>> fruit of the 0.89.x development release series we've been running of
> >>>> late.
> >>>>
> >>>> More than 920 issues have been closed since 0.20.0.  Release notes are
> >>>> available here: http://su.pr/8LbgvK.
> >>>>
> >>>> HBase 0.90.0 runs on Hadoop 0.20.x.  It does not currently run on
> >>>> Hadoop 0.21.0.   HBase will lose data unless it is running on an
> >>>> Hadoop HDFS 0.20.x that has a durable sync. Currently only the
> >>>> branch-0.20-append branch [1] has this attribute. No official releases
> >>>> have been made from this branch as yet so you will have to build your
> >>>> own Hadoop from the tip of this branch or install Cloudera's CDH3 [2]
> >>>> (Its currently in beta).  CDH3b2 or CDHb3 have the 0.20-append patches
> >>>> needed to add a durable sync. See CHANGES.txt [3] in
> >>>> branch-0.20-append to see list of patches involved.
> >>>>
> >>>> There is no migration necessary.  Your data written with HBase 0.20.x
> >>>> (or with HBase 0.89.x) is readable by HBase 0.90.0.  A shutdown and
> >>>> restart after putting in place the new HBase should be all thats
> >>>> involved.  That said, once done, there is no going back to 0.20.x once
> >>>> the transition has been made.   HBase 0.90.0 and HBase 0.89.x write
> >>>> region names differently in the filesystem.  Rolling restart from
> >>>> 0.20.x or 0.89.x to 0.90.0RC0 will not work.
> >>>>
> >>>> Should we release this candidate as hbase 0.90.0?  Take it for a spin.
> >>>>  Check out the doc.  Vote +1/-1 by November 22nd.
> >>>>
> >>>> Yours,
> >>>> The HBasistas
> >>>> P.S. For why the version 0.90 and whats new in HBase 0.90, see slides
> >>>> 4-10 in this deck [4]
> >>>>
> >>>> 1.
> http://svn.apache.org/viewvc/hadoop/common/branches/branch-0.20-append
> >>>> 2. http://archive.cloudera.com/docs/
> >>>> 3.
> >>>>
> http://svn.apache.org/viewvc/hadoop/common/branches/branch-0.20-append/CHANGES.txt
> >>>> 4. http://hbaseblog.com/2010/07/04/hug11-hbase-0-90-preview-wrap-up/
> >>>>
> >>>
> >>
> >
>

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