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From keith-turner <...@git.apache.org>
Subject [GitHub] accumulo pull request #176: Wrote blog post about durability and performance
Date Wed, 02 Nov 2016 19:10:35 GMT
Github user keith-turner commented on a diff in the pull request:

    https://github.com/apache/accumulo/pull/176#discussion_r86220565
  
    --- Diff: _posts/blog/2016-10-28-durability-performance.md ---
    @@ -7,17 +7,17 @@ author: Keith Turner
     ## Overview
     
     Accumulo stores recently written data in a sorted in memory map.  Before data is
    -added to this map, it's written to an unsorted WAL (write ahead log).  In the
    -case when a Tablet Server dies, the recently written data is recovered from the
    +added to this map, it's written to an unsorted write ahead log(WAL).  In the
    +case when a tablet server dies, the recently written data is recovered from the
     WAL.
     
     When data is written to Accumulo the following happens :
     
      * Client sends a batch of mutations to a tablet server
      * Tablet server does the following :
    -   * Writes mutation to Tablet Servers WAL
    -   * Sync or flush WAL
    -   * Adds mutations to sorted in memory maps
    +   * Writes mutation to tablet servers WAL
    --- End diff --
    
    Fixed this in a following on commit


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