Remove the last dependency call from org.apache.hadoop.record package in MR.
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Key: MAPREDUCE-3302
URL: https://issues.apache.org/jira/browse/MAPREDUCE-3302
Project: Hadoop Map/Reduce
Issue Type: Task
Components: client
Affects Versions: 0.24.0
Reporter: Harsh J
Assignee: Harsh J
Priority: Minor
Fix For: 0.24.0
SecureShuffleUtils provides the following helper:
{code}
/**
* verify that hash equals to HMacHash(msg)
* @param newHash
* @return true if is the same
*/
private static boolean verifyHash(byte[] hash, byte[] msg, SecretKey key) {
byte[] msg_hash = generateByteHash(msg, key);
return Utils.compareBytes(msg_hash, 0, msg_hash.length, hash, 0,
hash.length) == 0;
}
{code}
The {{Utils}} class used there is {{org.apache.hadoop.record.Utils}}. With the
{{record}} common package going away via HADOOP-7781, the internal (and also
deprecated on the whole) {{compareBytes}} utility must be moved elsewhere.
The {{Utils#compareBytes}} contains:
{code}
/** Lexicographic order of binary data. */
public static int compareBytes(byte[] b1, int s1, int l1,
byte[] b2, int s2, int l2) {
return WritableComparator.compareBytes(b1, s1, l1, b2, s2, l2);
}
{code}
Which looks like it can be replaced inline, as it appears to be a dummy wrapper
call. I'll put up a patch with this inline replacement shortly for review.
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