Github user srowen commented on a diff in the pull request:
https://github.com/apache/spark/pull/16403#discussion_r93968471
--- Diff: common/unsafe/src/main/java/org/apache/spark/unsafe/Platform.java
---
@@ -44,6 +49,9 @@
public static final int DOUBLE_ARRAY_OFFSET;
private static final boolean unaligned;
+
+ private static final MemoryBlock _doubleBuffer;
--- End diff --
This is a globally shared variable -- that's not going to work is it? reads
would all corrupt each other.
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