git commit: SPARK-1658: Correctly identify if maven is installed and working

[pw...@apache.org]

Repository: spark
Updated Branches:
  refs/heads/master fb0543224 -> e97a2e671


SPARK-1658: Correctly identify if maven is installed and working

The current test is checking the exit code of "tail" rather than "mvn".
This new check will make sure that mvn is installed and was able to
execute the "version command".

Author: Rahul Singhal <ra...@guavus.com>

Closes #580 from rahulsinghaliitd/SPARK-1658 and squashes the following commits:

83c0313 [Rahul Singhal] SPARK-1658: Correctly identify if maven is installed and working
bf821b9 [Rahul Singhal] SPARK-1658: Correctly identify if maven is installed and working


Project: http://git-wip-us.apache.org/repos/asf/spark/repo
Commit: http://git-wip-us.apache.org/repos/asf/spark/commit/e97a2e67
Tree: http://git-wip-us.apache.org/repos/asf/spark/tree/e97a2e67
Diff: http://git-wip-us.apache.org/repos/asf/spark/diff/e97a2e67

Branch: refs/heads/master
Commit: e97a2e6717e75c70c5474f2d211682565909e557
Parents: fb05432
Author: Rahul Singhal <ra...@guavus.com>
Authored: Sun May 4 11:08:39 2014 -0700
Committer: Patrick Wendell <pw...@gmail.com>
Committed: Sun May 4 11:08:39 2014 -0700

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 make-distribution.sh | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)
----------------------------------------------------------------------


http://git-wip-us.apache.org/repos/asf/spark/blob/e97a2e67/make-distribution.sh
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diff --git a/make-distribution.sh b/make-distribution.sh
index c05dcd8..dc8aa56 100755
--- a/make-distribution.sh
+++ b/make-distribution.sh
@@ -43,8 +43,9 @@
 FWDIR="$(cd `dirname $0`; pwd)"
 DISTDIR="$FWDIR/dist"
 
-VERSION=$(mvn help:evaluate -Dexpression=project.version | grep -v "INFO" | tail -n 1)
-if [ $? == -1 ] ;then
+set -o pipefail
+VERSION=$(mvn help:evaluate -Dexpression=project.version 2>/dev/null | grep -v "INFO" | tail -n 1)
+if [ $? != 0 ]; then
     echo -e "You need Maven installed to build Spark."
     echo -e "Download Maven from https://maven.apache.org."
     exit -1;