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https://issues.apache.org/jira/browse/HDFS-11943?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16057029#comment-16057029
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Kai Zheng commented on HDFS-11943:
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Thanks [~liaoyuxiangqin] for the update.
1. Please also check and do the same thing for AbstractNativeRawDecoder. When
you ensure the base class to indicate the preference, the method can be removed
from sub classes.
2. Note a minor check style issue.
> Warn log frequently print to screen in doEncode function on
> AbstractNativeRawEncoder class
> -------------------------------------------------------------------------------------------
>
> Key: HDFS-11943
> URL: https://issues.apache.org/jira/browse/HDFS-11943
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: erasure-coding, native
> Affects Versions: 3.0.0-alpha4
> Environment: cluster: 3 nodes
> os:(Red Hat 2.6.33.20, Red Hat 3.10.0-514.6.1.el7.x86_64,
> Ubuntu4.4.0-31-generic)
> hadoop version: hadoop-3.0.0-alpha4
> erasure coding: XOR-2-1-64k and enabled Intel ISA-L
> hadoop fs -put file /
> Reporter: liaoyuxiangqin
> Assignee: liaoyuxiangqin
> Priority: Minor
> Attachments: HDFS-11943.002.patch, HDFS-11943.003.patch,
> HDFS-11943.patch
>
> Original Estimate: 0.05h
> Remaining Estimate: 0.05h
>
> when i write file to hdfs on above environment, the hdfs client frequently
> print warn log of use direct ByteBuffer inputs/outputs in doEncode function
> to screen, detail information as follows:
> 2017-06-07 15:20:42,856 WARN rawcoder.AbstractNativeRawEncoder:
> convertToByteBufferState is invoked, not efficiently. Please use direct
> ByteBuffer inputs/outputs
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