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Accumulo >> mail # user >> Writes and Loggers


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Writes and Loggers
Hi all,
I want to verify some of the details with Accumulo Writes and Loggers.

How does the client find the correct tablet server to write to?  Does the client query the master once and receive the ranges associated with each tablet server? Is this list in zookeeper?

With write-ahead loggers, when a client makes a write request, to a tablet server:
The tablet server writes the data to a write-ahead logger which is stored on a different slave
Then acknowledges the client
Then writes adds data to its in memory table.

Do I have this order correct?

Is the number of loggers always fixed, can this be changed with server properties?

Thanks in advance,

Sandy

 
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John Vines 2012-10-10, 20:04
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