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From keith-turner <>
Subject [GitHub] accumulo pull request: ACCUMULO-3602 BatchScanner optimization for...
Date Tue, 07 Apr 2015 22:13:40 GMT
Github user keith-turner commented on a diff in the pull request:
    --- Diff: core/src/main/java/org/apache/accumulo/core/client/mapreduce/lib/impl/
    @@ -517,6 +517,74 @@ public static Boolean isOfflineScan(Class<?> implementingClass,
Configuration co
    +   * Controls the use of the {@link BatchScanner} in this job.
    +   * Using this feature will group ranges by their source tablet per InputSplit and use
BatchScanner to read them.
    --- End diff --
    Could mention what options this will not work with in javadoc.  For example setting this
will not work w/ offline scan and local iters.
    Could also mention the benefit of doing this.  It seems the main benefit is one RPC to
send multiple ranges to a tserver and then read the results, versus an RPC per range.

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