Repository: spark
Updated Branches:
  refs/heads/branch-1.4 82be68f10 -> 62308097b


[SPARK-7490] [CORE] [Minor] MapOutputTracker.deserializeMapStatuses: close 
input streams

GZIPInputStream allocates native memory that is not freed until close() or
when the finalizer runs. It is best to close() these streams explicitly.

stephenh made the same change for serializeMapStatuses in commit b0d884f0. This 
is the same change for deserialize.

(I ran the unit test suite! it seems to have passed. I did not make a JIRA 
since this seems "trivial", and the guidelines suggest it is not required for 
trivial changes)

Author: Evan Jones <ejo...@twitter.com>

Closes #5982 from evanj/master and squashes the following commits:

0d76e85 [Evan Jones] [CORE] MapOutputTracker.deserializeMapStatuses: close 
input streams

(cherry picked from commit 25889d8d97094325f10fbf52f3b36412f212eeb2)
Signed-off-by: Sean Owen <so...@cloudera.com>


Project: http://git-wip-us.apache.org/repos/asf/spark/repo
Commit: http://git-wip-us.apache.org/repos/asf/spark/commit/62308097
Tree: http://git-wip-us.apache.org/repos/asf/spark/tree/62308097
Diff: http://git-wip-us.apache.org/repos/asf/spark/diff/62308097

Branch: refs/heads/branch-1.4
Commit: 62308097b2a7376f7d2e3c3c28fa694125c9bddf
Parents: 82be68f
Author: Evan Jones <ejo...@twitter.com>
Authored: Fri May 8 22:00:39 2015 +0100
Committer: Sean Owen <so...@cloudera.com>
Committed: Fri May 8 22:01:01 2015 +0100

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 core/src/main/scala/org/apache/spark/MapOutputTracker.scala | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)
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http://git-wip-us.apache.org/repos/asf/spark/blob/62308097/core/src/main/scala/org/apache/spark/MapOutputTracker.scala
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diff --git a/core/src/main/scala/org/apache/spark/MapOutputTracker.scala 
b/core/src/main/scala/org/apache/spark/MapOutputTracker.scala
index 1607228..0184228 100644
--- a/core/src/main/scala/org/apache/spark/MapOutputTracker.scala
+++ b/core/src/main/scala/org/apache/spark/MapOutputTracker.scala
@@ -367,7 +367,11 @@ private[spark] object MapOutputTracker extends Logging {
   // Opposite of serializeMapStatuses.
   def deserializeMapStatuses(bytes: Array[Byte]): Array[MapStatus] = {
     val objIn = new ObjectInputStream(new GZIPInputStream(new 
ByteArrayInputStream(bytes)))
-    objIn.readObject().asInstanceOf[Array[MapStatus]]
+    Utils.tryWithSafeFinally {
+      objIn.readObject().asInstanceOf[Array[MapStatus]]
+    } {
+      objIn.close()
+    }
   }
 
   // Convert an array of MapStatuses to locations and sizes for a given reduce 
ID. If


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