You are viewing a plain text version of this content. The canonical link for it is here.

Posted to issues@hbase.apache.org by "chenxu (JIRA)" <ji...@apache.org> on 2019/08/06 15:16:00 UTC

[jira] [Created] (HBASE-22802) Avoid temp ByteBuffer allocation in FileIOEngine#read

chenxu created HBASE-22802:
------------------------------

             Summary: Avoid temp ByteBuffer allocation in FileIOEngine#read
                 Key: HBASE-22802
                 URL: https://issues.apache.org/jira/browse/HBASE-22802
             Project: HBase
          Issue Type: Improvement
          Components: BucketCache
            Reporter: chenxu


a temp ByteBuffer was allocated each time FileIOEngine#read was called
{code:java}
public Cacheable read(BucketEntry be) throws IOException {
  long offset = be.offset();
  int length = be.getLength();
  Preconditions.checkArgument(length >= 0, "Length of read can not be less than 0.");
  ByteBuffer dstBuffer = ByteBuffer.allocate(length);
  ...
}
{code}
we can avoid this by use of ByteBuffAllocator#allocate(length) after HBASE-21879



--
This message was sent by Atlassian JIRA
(v7.6.14#76016)