deniskuzZ commented on code in PR #544:
URL: https://github.com/apache/tez/pull/544#discussion_r4363151779
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tez-runtime-library/src/main/java/org/apache/tez/runtime/library/common/sort/impl/IFile.java:
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@@ -261,6 +263,8 @@ public Path getOutputPath() {
@InterfaceStability.Unstable
@SuppressWarnings({"unchecked", "rawtypes"})
public static class Writer {
+ private static final int WRITE_BUFFER_SIZE = 64 * 1024;
Review Comment:
BufferedOutputStream +5–6 % (Snappy) / +13–47 % (no codec); 4 KB costing
+150 % on the no-codec path, which is Tez's default configuration.
We could do more measurements in the follow-up
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