mesos git commit: Fixed bug in fetcher.cpp when HDFS client is not available.

[vi...@apache.org]

Repository: mesos
Updated Branches:
  refs/heads/master a8414b507 -> 691b2eea8


Fixed bug in fetcher.cpp when HDFS client is not available.

When trying to download an artifact with the Hadoop client,
and the client is not `available()` we correctly return a
false value, but then in the error message, we tried to
make a call to `Try::error` which failed and crashed Master.

This fixes it.

Review: https://reviews.apache.org/r/37584


Project: http://git-wip-us.apache.org/repos/asf/mesos/repo
Commit: http://git-wip-us.apache.org/repos/asf/mesos/commit/691b2eea
Tree: http://git-wip-us.apache.org/repos/asf/mesos/tree/691b2eea
Diff: http://git-wip-us.apache.org/repos/asf/mesos/diff/691b2eea

Branch: refs/heads/master
Commit: 691b2eea830bdeaa22c5600641a626952b76e329
Parents: a8414b5
Author: Marco Massenzio <ma...@mesosphere.io>
Authored: Tue Aug 18 12:17:18 2015 -0700
Committer: Vinod Kone <vi...@gmail.com>
Committed: Tue Aug 18 12:24:27 2015 -0700

----------------------------------------------------------------------
 src/launcher/fetcher.cpp | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)
----------------------------------------------------------------------


http://git-wip-us.apache.org/repos/asf/mesos/blob/691b2eea/src/launcher/fetcher.cpp
----------------------------------------------------------------------
diff --git a/src/launcher/fetcher.cpp b/src/launcher/fetcher.cpp
index f8b46b8..79b1d98 100644
--- a/src/launcher/fetcher.cpp
+++ b/src/launcher/fetcher.cpp
@@ -97,8 +97,9 @@ static Try<string> downloadWithHadoopClient(
   Try<bool> available = hdfs.available();
 
   if (available.isError() || !available.get()) {
-    return Error("Skipping fetch with Hadoop Client as"
-                 " Hadoop Client not available: " + available.error());
+      return Error(
+          "Skipping fetch with Hadoop client: " +
+          (available.isError() ? available.error() : " client not found"));
   }
 
   LOG(INFO) << "Downloading resource with Hadoop client from '" << sourceUri