rakeshadr commented on code in PR #3201:
URL: https://github.com/apache/ozone/pull/3201#discussion_r875646309
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hadoop-ozone/interface-client/src/main/proto/OmClientProtocol.proto:
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@@ -814,6 +814,41 @@ message KeyLocationList {
optional bool isMultipartKey = 4 [default = false];
}
+/**
+ * Checksum algorithms/types used in Ozone
+ * Make sure this enum's integer values match enum values' id properties
defined
+ * in org.apache.hadoop.util.DataChecksum.Type
+ */
+enum ChecksumTypeProto {
+ CHECKSUM_NULL = 0;
+ CHECKSUM_CRC32 = 1;
+ CHECKSUM_CRC32C = 2;
+}
+
+enum FileChecksumTypeProto {
+ COMPOSITE_CRC = 1; // Chunk-independent CRC, optionally striped
+ MD5CRC = 2; // BlockChecksum obtained by taking the MD5 digest of chunk CRCs
Review Comment:
Composite represents - Calculate a single CRC that represents the entire
file and is independent of the lower-level granularity of chunk CRCs. Its not
only for EC, instead files of different layout (different block size, EC).
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