jojochuang commented on code in PR #3581:
URL: https://github.com/apache/ozone/pull/3581#discussion_r924985908
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hadoop-ozone/client/src/main/java/org/apache/hadoop/ozone/client/checksum/ReplicatedBlockChecksumComputer.java:
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@@ -69,4 +83,62 @@ private void computeMd5Crc() throws IOException {
LOG.debug("number of chunks={}, md5out={}",
chunkInfoList.size(), fileMD5);
}
+
+ // compute the block checksum of CompositeCrc,
+ // which is the incremental computation of chunk checksums
+ private void computeCompositeCrc() throws IOException {
+ DataChecksum.Type dataChecksumType = null;
+ long bytesPerCrc = 0;
+ long chunkSize = 0;
+ if (chunkInfoList.size() > 0) {
+ final ContainerProtos.ChunkInfo firstChunkInfo = chunkInfoList.get(0);
+ switch (firstChunkInfo.getChecksumData().getType()) {
+ case CRC32C:
+ dataChecksumType = DataChecksum.Type.CRC32C;
+ break;
+ case CRC32:
+ dataChecksumType = DataChecksum.Type.CRC32;
+ break;
+ default:
+ throw new IllegalArgumentException("unsupported checksum type");
+ }
+ chunkSize = firstChunkInfo.getLen();
+ bytesPerCrc = firstChunkInfo.getChecksumData().getBytesPerChecksum();
+ }
+
+ CrcComposer blockCrcComposer =
+ CrcComposer.newCrcComposer(dataChecksumType, chunkSize);
Review Comment:
will fail if chunkInfoList.size() == 0
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