[HDFS-11943] [Erasure coding] Warn log frequently print to screen in doEncode/doDecode functions

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 3.0.0-alpha4
• Fix Version/s: 3.0.0-alpha4
• Component/s: erasure-coding, native

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 /

• Target Version/s: 3.0.0-alpha4
• Hadoop Flags: Reviewed
• Flags: Patch
• Assignee: liaoyuxiangqin
• Reporter: liaoyuxiangqin
• Created: 07/Jun/17 09:26
• Updated: 26/Jun/17 08:55
• Resolved: 26/Jun/17 08:28

Description

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