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From ste...@apache.org
Subject svn commit: r1524654 - /hadoop/common/branches/branch-2.1-beta/BUILDING.txt
Date Thu, 19 Sep 2013 08:24:26 GMT
Author: stevel
Date: Thu Sep 19 08:24:26 2013
New Revision: 1524654

URL: http://svn.apache.org/r1524654
Log:
HADOOP-9974: document setting mvn heap size

Modified:
    hadoop/common/branches/branch-2.1-beta/BUILDING.txt

Modified: hadoop/common/branches/branch-2.1-beta/BUILDING.txt
URL: http://svn.apache.org/viewvc/hadoop/common/branches/branch-2.1-beta/BUILDING.txt?rev=1524654&r1=1524653&r2=1524654&view=diff
==============================================================================
--- hadoop/common/branches/branch-2.1-beta/BUILDING.txt (original)
+++ hadoop/common/branches/branch-2.1-beta/BUILDING.txt Thu Sep 19 08:24:26 2013
@@ -4,8 +4,8 @@ Build instructions for Hadoop
 Requirements:
 
 * Unix System
-* JDK 1.6
-* Maven 3.0
+* JDK 1.6+
+* Maven 3.0 or later
 * Findbugs 1.3.9 (if running findbugs)
 * ProtocolBuffer 2.5.0
 * CMake 2.6 or newer (if compiling native code)
@@ -149,6 +149,21 @@ Create a local staging version of the we
 
 ----------------------------------------------------------------------------------
 
+Handling out of memory errors in builds
+
+----------------------------------------------------------------------------------
+
+If the build process fails with an out of memory error, you should be able to fix
+it by increasing the memory used by maven -which can be done via the environment
+variable MAVEN_OPTS.
+
+Here is an example setting to allocate between 256 and 512 MB of heap space to
+Maven
+
+export MAVEN_OPTS="-Xms256m -Xmx512m"
+
+----------------------------------------------------------------------------------
+
 Building on OS/X
 
 ----------------------------------------------------------------------------------



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