ACCUMULO-2532 Expand on comment as to why we create this (otherwise curious) file
Project: http://git-wip-us.apache.org/repos/asf/accumulo/repo Commit: http://git-wip-us.apache.org/repos/asf/accumulo/commit/9678a2c5 Tree: http://git-wip-us.apache.org/repos/asf/accumulo/tree/9678a2c5 Diff: http://git-wip-us.apache.org/repos/asf/accumulo/diff/9678a2c5 Branch: refs/heads/1.6.0-SNAPSHOT Commit: 9678a2c51a33cc8c58969450e81c0acf40714930 Parents: 74ffff1 Author: Josh Elser <els...@apache.org> Authored: Tue Mar 25 16:09:50 2014 -0700 Committer: Josh Elser <els...@apache.org> Committed: Tue Mar 25 16:09:50 2014 -0700 ---------------------------------------------------------------------- .../src/main/java/org/apache/accumulo/server/util/FileUtil.java | 2 ++ 1 file changed, 2 insertions(+) ---------------------------------------------------------------------- http://git-wip-us.apache.org/repos/asf/accumulo/blob/9678a2c5/server/base/src/main/java/org/apache/accumulo/server/util/FileUtil.java ---------------------------------------------------------------------- diff --git a/server/base/src/main/java/org/apache/accumulo/server/util/FileUtil.java b/server/base/src/main/java/org/apache/accumulo/server/util/FileUtil.java index 4fee83d..0f7ac22 100644 --- a/server/base/src/main/java/org/apache/accumulo/server/util/FileUtil.java +++ b/server/base/src/main/java/org/apache/accumulo/server/util/FileUtil.java @@ -96,6 +96,8 @@ public class FileUtil { fs.mkdirs(result); // try to reserve the tmp dir + // In some versions of hadoop, two clients concurrently trying to create the same directory might both return true + // Creating a file is not subject to this, so create a special file to make sure we solely will use this directory if (!fs.createNewFile(new Path(result, "__reserve"))) result = null; }
