iamcaoxudong commented on a change in pull request #830: HDDS-1530. Freon
support big files larger than 2GB and add --bufferSize and --validateWrites
options.
URL: https://github.com/apache/hadoop/pull/830#discussion_r285991232
##########
File path:
hadoop-ozone/tools/src/main/java/org/apache/hadoop/ozone/freon/RandomKeyGenerator.java
##########
@@ -228,8 +243,20 @@ public Void call() throws Exception {
init(freon.createOzoneConfiguration());
}
- keyValue =
- DFSUtil.string2Bytes(RandomStringUtils.randomAscii(keySize - 36));
+ keyValueBuffer = DFSUtil.string2Bytes(
+ RandomStringUtils.randomAscii(bufferSize));
Review comment:
Thank you, but the generation of random data may not take too much time,
just like xiaoyuyao said above, repeatedly calculate the same content won't
change the digest, so as an optimization, MessageDigest.update() is only
required for the first calculation and the last calculation. this is quickly
indeed.
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