[HBASE-27049] Decrease memory copy when decompress data

• Type: Improvement
• Status: Open
• Priority: Minor
• Resolution: Unresolved
• Component/s: regionserver

Language

Java

• Assignee: Unassigned
• Reporter: chenfengge
• Created: 18/May/22 02:27
• Updated: 18/May/22 17:08

Description

HBase RegionServer use createDecompressionStream in class org.apache.hadoop.hbase.io.compress.Compression, which cause extra memory copy during decompression.We can offer interface for block decompression, like "void decompress(ByteBuff src, ByteBuff dst);", and offer default implementation for all algorithms.