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Subject svn commit: r1680399 - /accumulo/site/trunk/content/release_notes/1.7.0.mdtext
Date Tue, 19 May 2015 21:45:17 GMT
Author: elserj
Date: Tue May 19 21:45:17 2015
New Revision: 1680399

ACCUMULO-3737 Includes docs for previously mentioned issues by ctubbsii


Modified: accumulo/site/trunk/content/release_notes/1.7.0.mdtext
--- accumulo/site/trunk/content/release_notes/1.7.0.mdtext (original)
+++ accumulo/site/trunk/content/release_notes/1.7.0.mdtext Tue May 19 21:45:17 2015
@@ -268,6 +268,34 @@ to reduce the quantity of sockets we nee
 non-cached connection for the message requesting loads of metadata tablets,
 we can ensure that this deadlock won't occur.
+## Other changes
+### VERSIONS file present in binary distribution
+In the pre-built binary distribution, or distributions built by users from the
+official source release, users will now see a `VERSIONS` file present in the lib
+directory alongside the Accumulo server-side jars. Because the created tarball
+strips off versions from the jar file names, it can be extra work to actually
+find what the version of the deployed jars is.
+[ACCUMULO-2863][ACCUMULO-2863] adds this `VERSIONS` file to the `lib/` directory
+which contains the Maven groupId, artifactId, and verison (GAV) information for
+each jar file.
+### Per-Table Volume Chooser
+The `VolumeChooser` interface is a server-side extension point that allows user
+tables to provide custom logic in choosing where its files are written when multiple
+HDFS instances are available. By default, a randomized volume chooser implementation
+is used to evenly balance files across all HDFS instances.
+Previously, this VolumeChooser logic was instance-wide which meant that it would
+affect system tables. This is potentially undesirable as it might unintentionally
+impact other users in a multi-tenant system. [ACCUMULO-3177][ACCUMULO-3177] introduces
+a new per-table property which supports configuration of a `VolumeChooser`. This
+ensures that the implementation to choose how HDFS utilization happens when multiple
+are available is limited to the expected subset of all tables.
 ## Testing
 Each unit and functional test only runs on a single node, while the RandomWalk and Continuous
Ingest tests run 
@@ -343,8 +371,10 @@ and, in HDFS High-Availability instances

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