I believe he's referring to a java process. It turns out that after more investigation by stack, there is not a giant lock in the RPC mechanism client-side.
Check out: https://issues.apache.org/jira/browse/HBASE-576 To increase performance you'll want multiple threads each with their own HTables. JG -----Original Message----- From: Krzysztof Szlapinski [mailto:[EMAIL PROTECTED] Sent: Friday, October 10, 2008 3:53 AM To: [email protected] Subject: Re: Hbase / Hadoop Tuning Jim Kellerman (POWERSET) wrote: > Using a single client will also limit write performance. > Even if the client is multi-threaded, there is a big giant lock > in the RPC mechanism which prevents concurrent requests (This > is something we plan to fix in the future). > What do you mean by "hbase client"? Do you mean the instances of HBaseAdmin and HTable (any other?). krzysiek
