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From Stack <st...@duboce.net>
Subject Re: ANN: The first hbase 0.94.0 release candidate is available for download
Date Thu, 29 Mar 2012 18:43:31 GMT
On Tue, Mar 27, 2012 at 11:28 PM, lars hofhansl <lhofhansl@yahoo.com> wrote:
> The first 0.94.0 RC is available for download here:
>
> http://people.apache.org/~larsh/hbase-0.94.0-rc0/
>

Reasons to test 0.94.0RC are performance improvements, mostly savings
in i/o but also more cache because blocks stay compressed in memory.

HBASE-4465 Lazy-seek optimization for StoreFile scanners
HBASE-5074 Support checksums in HBase block cache
HBASE-4608 HLog Compression
HBASE-5199 Delete out of TTL store files before compaction selection
HBASE-4532 Avoid top row seek by dedicated bloom filter for delete
family bloom filter
HBASE-4218 Data Block Encoding of KeyValues

Other features:

HBASE-5128 [uber hbck] Online automated repair of table integrity and
region consistency problems
HBASE-3584 Allow atomic put/delete in one call
HBASE-4536 Allow CF to retain deleted rows
HBASE-5229 Provide basic building blocks for "multi-row" local transactions.

St.Ack

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