HBase Digest, June 2010

HBase 0.20.5 is out! It fixes 24 issues since the 0.20.4 release. HBase developers “recommend that all users, particularly those running 0.20.4, upgrade to this release”.

Community trends:

  • There’s a clear need in “sanity check DNS across my cluster” tool as a lot of questions/help requests related to the name/address resolution in the cluster are submitted over time. Any volunteers?
  • Bulk incremental load into an existing table feature (HBASE-1923) is commited to trunk. No multi-family support still.
  • Good number of advice about increasing the write performance/speed in this thread, including shared numbers/techniques from a large production cluster.
  • A set of ORM tools to consider for HBase are suggested here.

Notable efforts:

FAQ:

  • Common issue: tables/data disappears after system restart. Usually people face it when playing with HBase for the first time and even on the single node set-up. The problem is that by default HDFS is configured to store its data in the /tmp dir which might get cleaned up by OS. Configure “dfs.name.dir” and “dfs.data.dir” properties in hdfs-site.xml to aviod these problems.

3 Responses to HBase Digest, June 2010

  1. Steven Noels says:

    May I respectfully plug our HBase RowLog library – a library to build WALs and MQs on top HBase, which we released this month as well?

    • sematext says:

      Yes, it’s relevant. I have it in one of my browser tabs, waiting to be read (big page that requires lots of reading means I keep postponing reading it).

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s

Follow

Get every new post delivered to your Inbox.

Join 1,696 other followers

%d bloggers like this: