johnjcasey commented on code in PR #26925:
URL: https://github.com/apache/beam/pull/26925#discussion_r1213459173
##########
sdks/java/core/src/main/java/org/apache/beam/sdk/io/Compression.java:
##########
@@ -240,8 +244,66 @@ public WritableByteChannel
writeCompressed(WritableByteChannel channel) throws I
return Channels.newChannel(
new SnappyCompressorOutputStream(Channels.newOutputStream(channel),
uncompressedSize));
}
+ },
+
+ /** Four MC Compression Splittable compressed file format leveraging LZ4
+ * Uses LZ4 Fast Compression*/
+ MC4_FAST(".4mc", ".4mc") {
Review Comment:
can you show your experiments verifying that many types with the same
exception doesn't break?
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