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Re: Proposal: HBase Hackathon Aug 22 @ FB - HBase - [mail # dev]
...+1  On Thu, Aug 4, 2011 at 2:02 PM, Todd Lipcon  wrote:  ...
   Author: Gary Helmling, 2011-08-04, 22:01
Re: HBase / YCSB - HBase - [mail # user]
...Is it possible that you have mismatched versions of either the hbase jar or hadoop jar on the ycsb client versus the servers? In almost all cases where I've run into mysterious rpc hangs rig...
   Author: Gary Helmling, 2011-07-29, 17:07
Re: Fanning out hbase queries in parallel - HBase - [mail # user]
...Unfortunately there's no easy patch set to pull coprocessors into any 0.90 HBase version (including CDH3 HBase).  The changes are extensive and invasive and include RPC protocol changes...
   Author: Gary Helmling, 2011-07-25, 21:26
Re: hbase table as a queue. - HBase - [mail # user]
...All excellent points here in terms of tuning!  For the higher-level question about using a table as a queue, I just wanted to add in a link to the Lily guys' rowlog library, since it do...
   Author: Gary Helmling, 2011-07-19, 18:27
Re: hbase + lucene? - HBase - [mail # user]
...I wasn't at the day-after presentation, but I believe these are the slides?  https://docs.google.com/viewer?a=v&pid=explorer&chrome=true&srcid=0B2c-FWyLSJBCN2E5MTdmOGMtY2U5NS00NmEwLWE2N...
   Author: Gary Helmling, 2011-07-19, 18:20
Re: HBase and Hadoop 0.20-security-append - HBase - [mail # user]
...On Mon, Jul 18, 2011 at 9:25 AM, David Capwell wrote:  Yes, if you have HDFS security enabled (hadoop.security.authentication=kerberos), you will need these configuration entries (and a...
   Author: Gary Helmling, 2011-07-18, 17:29
Re: Retry HTable.put() on client-side to handle temp connectivity problem - HBase - [mail # dev]
...I'd also be wary of changing the default to retry forever.  This might be hard to differentiate from a hang or deadlock for new users and seems to violate "least surprise".  In man...
   Author: Gary Helmling, 2011-06-28, 16:17
Re: Keytabs and secure hadoop - HBase - [mail # user]
...Hi Francis,  First a word of warning -- Hadoop 0.20.203 does not include the append support that HBase needs to avoid data loss in the case of region server failure.  I'd _strongly...
   Author: Gary Helmling, 2011-06-20, 18:18
Re: any multitenancy suggestions for HBase? - HBase - [mail # user]
...Hi Bill,  The current security code supports per-column-qualifier ACLs, though not the pattern matching approach you describe.  It's simply an exact match on column qualifier. &nbs...
   Author: Gary Helmling, 2011-06-20, 17:56
Help with 0.92 new feature list - HBase - [mail # dev]
...Hi folks,  As part of my presentation for Hadoop Summit, I'd like to include a slide highlighting new features or major improvements in 0.92.  I've admittedly had my head in coproc...
   Author: Gary Helmling, 2011-06-05, 10:23
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