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Subject svn commit: r1587422 - /accumulo/site/trunk/content/release_notes/1.6.0.mdtext
Date Tue, 15 Apr 2014 05:22:30 GMT
Author: elserj
Date: Tue Apr 15 05:22:30 2014
New Revision: 1587422

ACCUMULO-2396 Add section describing reason behind omission of nativemap shared lib in binary
tarball and how to built said library.


Modified: accumulo/site/trunk/content/release_notes/1.6.0.mdtext
--- accumulo/site/trunk/content/release_notes/1.6.0.mdtext (original)
+++ accumulo/site/trunk/content/release_notes/1.6.0.mdtext Tue Apr 15 05:22:30 2014
@@ -82,6 +82,18 @@ While Hadoop [does not support IPv6 netw
 Multiple bug-fixes were made to support running Accumulo over multiple HDFS instances using
ViewFS. [ACCUMULO-2047][ACCUMULO-2047] is the parent
 ticket that contains numerous fixes to enable this support.
+### Packaging
+One notable change that was made to the binary tarball is the purposeful omission of a pre-built
copy of the Accumulo "native map" library.
+This shared library is used at ingest time to implement an off-JVM-heap sorted map that greatly
increases ingest throughput while side-stepping
+issues such as JVM garbage collection pauses. In earlier releases, a pre-built copy of this
shared library was included in the binary tarball; however, the decision was made to omit
this due to the potential variance in toolchains on the target system.
+It is recommended that users invoke the provided before running Accumulo:
+       $ACCUMULO_HOME/bin/
+Be aware that you will need a C++ compiler/toolchain installed to build this library. Check
your GNU/Linux distribution documentation for the package manager command.
 ### Other notable changes
  * [ACCUMULO-842][ACCUMULO-842] Added FATE administration to shell

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