Github user zsxwing commented on a diff in the pull request:
https://github.com/apache/spark/pull/8880#discussion_r76323076
--- Diff:
core/src/main/scala/org/apache/spark/serializer/SerializerManager.scala ---
@@ -103,16 +108,44 @@ private[spark] class
SerializerManager(defaultSerializer: Serializer, conf: Spar
}
/**
+ * Wrap an input stream for encryption and compression
+ */
+ def wrapStream(blockId: BlockId, s: InputStream): InputStream = {
+ wrapForCompression(blockId, wrapForEncryption(s))
+ }
+
+ /**
+ * Wrap an output stream for encryption and compression
+ */
+ def wrapStream(blockId: BlockId, s: OutputStream): OutputStream = {
+ wrapForEncryption(wrapForCompression(blockId, s))
--- End diff --
why not compress first then encrypt? The performance will be better since
it encrypts less data.
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