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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-11446) Reduce the frequency of RNG calls in SecureWALCellCodec#EncryptedKvEncoder
Date Fri, 04 Jul 2014 23:08:35 GMT

    [ https://issues.apache.org/jira/browse/HBASE-11446?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14052713#comment-14052713
] 

Hudson commented on HBASE-11446:
--------------------------------

FAILURE: Integrated in HBase-0.98-on-Hadoop-1.1 #356 (See [https://builds.apache.org/job/HBase-0.98-on-Hadoop-1.1/356/])
HBASE-11446 Reduce the frequency of RNG calls in SecureWALCellCodec#EncryptedKvEncoder (apurtell:
rev 624a66ecaadb0f3838c696fee035dff470a28e1c)
* hbase-common/src/main/java/org/apache/hadoop/hbase/io/crypto/Encryptor.java
* hbase-common/src/main/java/org/apache/hadoop/hbase/io/crypto/Encryption.java
* hbase-common/src/main/java/org/apache/hadoop/hbase/io/crypto/aes/AESEncryptor.java
* hbase-common/src/main/java/org/apache/hadoop/hbase/io/crypto/aes/AESDecryptor.java
* hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/wal/SecureWALCellCodec.java
* hbase-common/src/main/java/org/apache/hadoop/hbase/io/crypto/Decryptor.java
* hbase-common/src/main/java/org/apache/hadoop/hbase/io/crypto/aes/AES.java


> Reduce the frequency of RNG calls in SecureWALCellCodec#EncryptedKvEncoder
> --------------------------------------------------------------------------
>
>                 Key: HBASE-11446
>                 URL: https://issues.apache.org/jira/browse/HBASE-11446
>             Project: HBase
>          Issue Type: Improvement
>            Reporter: Andrew Purtell
>            Assignee: Andrew Purtell
>             Fix For: 0.99.0, 0.98.4
>
>         Attachments: HBASE-11446.patch, HBASE-11446.patch, HBASE-11446.patch
>
>
> By reducing the frequency of RNG calls in SecureWALCellCodec#EncryptedKvEncoder we can
save 37% of on CPU time in that method and 3% of total on CPU time during an ingest test.
WAL processing is a critical latency sensitive area.



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