Home | About | Sematext search-lucene.com search-hadoop.com
NEW: Monitor These Apps!
elasticsearch, apache solr, apache hbase, hadoop, redis, casssandra, amazon cloudwatch, mysql, memcached, apache kafka, apache zookeeper, apache storm, ubuntu, centOS, red hat, debian, puppet labs, java, senseiDB
 Search Hadoop and all its subprojects:

Switch to Threaded View
HBase >> mail # dev >> DISCUSS : HFile V3 proposal for tags in 0.96


Copy link to this message
-
Re: DISCUSS : HFile V3 proposal for tags in 0.96
On Thu, Jul 18, 2013 at 10:14 AM, ramkrishna vasudevan <
[EMAIL PROTECTED]> wrote:
...

>  We can avoid several problems with HFile V2 internals, and backwards
> compatibility concerns, and allow for working tags support with no
> performance impact and low risk to all HBase users who do not want tag
> support, while still allowing for inline tags capabilities in a shipping
> version of HBase, by introducing this in a new V3 version for HFile.
>
>
This seems like a good tactic to me.  HFileV2 has the current KV format
hard-coded all over and trying to 'fix' this would probably take a bunch of
effort and would jeopardize current workings.

....

>
>  We have been working on this and will have a clean patch with good amount
> of testing in time for 0.96.
>
>
I'd think that your moving into a green field by doing an hfilev3 would
make it so your work could run independent of 0.96 timeline; i.e. it could
come in post 0.96?

What sort of changes do you foresee necessary in core to support cell
codecs?  Between rpc and hfilev3?

Thanks Ram,
St.Ack
NEW: Monitor These Apps!
elasticsearch, apache solr, apache hbase, hadoop, redis, casssandra, amazon cloudwatch, mysql, memcached, apache kafka, apache zookeeper, apache storm, ubuntu, centOS, red hat, debian, puppet labs, java, senseiDB