[HBASE-14117] Check DBEs where fields are being read from Bytebuffers but unused.

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Incomplete
• Assignee: Unassigned
• Reporter: ramkrishna.s.vasudevan
• Created: 17/Jul/15 13:10
• Updated: 01/Jul/22 20:45
• Resolved: 01/Jul/22 20:45

Description

public Cell getFirstKeyCellInBlock(ByteBuff block) {
    block.mark();
    block.position(Bytes.SIZEOF_INT);
    int keyLength = ByteBuff.readCompressedInt(block);
    // TODO : See if we can avoid these reads as the read values are not getting used
    ByteBuff.readCompressedInt(block);

In DBEs many a places we read the integers just to skip them. This JIRA is to see if we can avoid this and rather go position based, as per a review comment in HBASE-12213.

Issue Links

• is related to: HBASE-12213 HFileBlock backed by Array of ByteBuffers