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https://issues.apache.org/jira/browse/HADOOP-10768?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16472878#comment-16472878
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Ted Yu edited comment on HADOOP-10768 at 5/12/18 2:29 AM:
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[~jojochuang]:
If you look in the hbase master log, there should be clue as to why master
couldn't finish initialization.
Cheers
was (Author: yuzhih...@gmail.com):
[~jojochuang]:
If you look in the master log, there should be clue as to why master couldn't
finish initialization.
Cheers
> 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, Optimize Hadoop RPC encryption performance.pdf
>
>
> 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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