On 04/09/11 07:43, Mathias Herberts wrote:
On Sep 4, 2011 1:39 AM, "Bill de hÓra"<[email protected]>  wrote:

On 02/09/11 19:06, Stack wrote:

What do folks think?


Not putting the log into hdfs seems like a good idea.

I was somehow thinking the opposite as it makes irrecoverable machine
failures much more problematic. What makes you say it's a good idea?


Grants control over the write path, specifically sequential I/O and crash recovery. Granted you'd want more than one copy replicated, but you need that regardless. Thinking a bit more it might not work with the regionserver model, and the Accumulo proposal mentions a service here rather than a local disk. Anyway, I may be still thinking about older HBase code when the WAL didn't work so well, today it seems like just edge cases (https://issues.apache.org/jira/browse/HBASE-4107).

Bill

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