[HDFS-10194] FSDataOutputStream.write() allocates new byte buffer on each operation

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Invalid
• Affects Version/s: 2.7.1
• Component/s: hdfs-client
• Assignee: Unassigned
• Reporter: Vladimir Rodionov
• Created: 22/Mar/16 21:52
• Updated: 22/Mar/16 23:30
• Resolved: 22/Mar/16 23:30

Description

This is the code:

 private DFSPacket createPacket(int packetSize, int chunksPerPkt, long offsetInBlock, long seqno, boolean lastPacketInBlock) throws InterruptedIOException {
     final byte[] buf;
     final int bufferSize = PacketHeader.PKT_MAX_HEADER_LEN +   packetSize;
 
     try {
       buf = byteArrayManager.newByteArray(bufferSize);
     } catch (InterruptedException ie) {
       final InterruptedIOException iioe = new InterruptedIOException(
           "seqno=" + seqno);
       iioe.initCause(ie);
       throw iioe;
     }
 
     return new DFSPacket(buf, chunksPerPkt, offsetInBlock, seqno,
                          getChecksumSize(), lastPacketInBlock);
}

Issue Links

• blocks: HBASE-15506 FSDataOutputStream.write() allocates new byte buffer on each operation