Github user keith-turner commented on a diff in the pull request:
https://github.com/apache/accumulo/pull/25#discussion_r27926398
--- Diff:
core/src/main/java/org/apache/accumulo/core/client/mapreduce/lib/impl/InputConfigurator.java
---
@@ -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.
---
If your project is set up for it, you can reply to this email and have your
reply appear on GitHub as well. If your project does not have this feature
enabled and wishes so, or if the feature is enabled but not working, please
contact infrastructure at [email protected] or file a JIRA ticket
with INFRA.
---
