[
https://issues.apache.org/jira/browse/HADOOP-10768?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16487689#comment-16487689
]
Wei-Chiu Chuang commented on HADOOP-10768:
------------------------------------------
Sorry for the delay on my part -- uploaded v010 that added the thread local Mac
instance, without addressing the code review for rev009:
(here's the diff comparing v010 and v009)
diff --git
a/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/security/SaslCryptoCodec.java
b/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/security/SaslCryptoCodec.java
index 12dd436..e49f9c5 100644
---
a/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/security/SaslCryptoCodec.java
+++
b/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/security/SaslCryptoCodec.java
@@ -48,6 +48,26 @@
private final Integrity integrity;
+ /**
+ * The name of the hashing algorithm.
+ */
+ private static final String DEFAULT_HMAC_ALGORITHM = "HmacMD5";
+ /**
+ * A thread local store for the Macs.
+ */
+ private static final ThreadLocal<Mac> threadLocalMac =
+ new ThreadLocal<Mac>(){
+ @Override
+ protected Mac initialValue() {
+ try {
+ return Mac.getInstance(DEFAULT_HMAC_ALGORITHM);
+ } catch (NoSuchAlgorithmException nsa) {
+ throw new RuntimeException(
+ "Error creating instance of MD5 MAC algorithm", nsa);
+ }
+ }
+ };
+
public SaslCryptoCodec(Configuration conf, CipherOption cipherOption,
boolean isServer) throws IOException {
CryptoCodec codec = CryptoCodec.getInstance(conf,
@@ -174,9 +194,9 @@ void incPeerSeqNum() {
System.arraycopy(seqNum, 0, seqAndMsg, 0, SEQ_NUM_LENGTH);
System.arraycopy(msg, start, seqAndMsg, SEQ_NUM_LENGTH, len);
+ Mac m = threadLocalMac.get();
try {
- SecretKey keyKi = new SecretKeySpec(key, "HmacMD5");
- Mac m = Mac.getInstance("HmacMD5");
+ SecretKey keyKi = new SecretKeySpec(key, DEFAULT_HMAC_ALGORITHM);
m.init(keyKi);
m.update(seqAndMsg);
byte[] hMacMd5 = m.doFinal();
@@ -189,9 +209,6 @@ void incPeerSeqNum() {
} catch (InvalidKeyException e) {
throw new SaslException("Invalid bytes used for key of HMAC-MD5 hash.",
e);
- } catch (NoSuchAlgorithmException e) {
- throw new SaslException("Error creating instance of MD5 MAC algorithm",
- e);
}
}
diff --git
a/hadoop-common-project/hadoop-common/src/test/java/org/apache/hadoop/ipc/TestRPCCallBenchmark.java
b/hadoop-common-project/hadoop-common/src/test/java/org/apache/hadoop/ipc/TestRPCCallBenchmark.java
index 2393f49..93329fd 100644
---
a/hadoop-common-project/hadoop-common/src/test/java/org/apache/hadoop/ipc/TestRPCCallBenchmark.java
+++
b/hadoop-common-project/hadoop-common/src/test/java/org/apache/hadoop/ipc/TestRPCCallBenchmark.java
@@ -35,7 +35,10 @@ public void testBenchmarkWithProto() throws Exception {
"--time", "5",
"--serverReaderThreads", "4",
"--messageSize", "1024",
- "--engine", "protobuf"});
+ "--engine", "protobuf",
+ "--sasl",
+ "--qop", "PRIVACY",
+ "--cipher", "AES/CTR/NoPadding"});
assertEquals(0, rc);
}
}
> Optimize Hadoop RPC encryption performance
> ------------------------------------------
>
> Key: HADOOP-10768
> URL: https://issues.apache.org/jira/browse/HADOOP-10768
> Project: Hadoop Common
> Issue Type: Improvement
> Components: performance, security
> Affects Versions: 3.0.0-alpha1
> Reporter: Yi Liu
> Assignee: Dapeng Sun
> Priority: Major
> Attachments: HADOOP-10768.001.patch, HADOOP-10768.002.patch,
> HADOOP-10768.003.patch, HADOOP-10768.004.patch, HADOOP-10768.005.patch,
> HADOOP-10768.006.patch, HADOOP-10768.007.patch, HADOOP-10768.008.patch,
> HADOOP-10768.009.patch, HADOOP-10768.010.patch, Optimize Hadoop RPC
> encryption performance.pdf, cpu_profile_RPC_encryption_AES.png,
> cpu_profile_rpc_encryption_optimize_calculateHMAC.png
>
>
> Hadoop RPC encryption is enabled by setting {{hadoop.rpc.protection}} to
> "privacy". It utilized SASL {{GSSAPI}} and {{DIGEST-MD5}} mechanisms for
> secure authentication and data protection. Even {{GSSAPI}} supports using
> AES, but without AES-NI support by default, so the encryption is slow and
> will become bottleneck.
> After discuss with [~atm], [~tucu00] and [~umamaheswararao], we can do the
> same optimization as in HDFS-6606. Use AES-NI with more than *20x* speedup.
> On the other hand, RPC message is small, but RPC is frequent and there may be
> lots of RPC calls in one connection, we needs to setup benchmark to see real
> improvement and then make a trade-off.
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