apurtell commented on a change in pull request #3244:
URL: https://github.com/apache/hbase/pull/3244#discussion_r629763436
##########
File path:
hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/wal/CompressionContext.java
##########
@@ -34,21 +36,49 @@
@InterfaceAudience.LimitedPrivate({HBaseInterfaceAudience.COPROC,
HBaseInterfaceAudience.PHOENIX})
public class CompressionContext {
- static final String ENABLE_WAL_TAGS_COMPRESSION =
+ public static final String ENABLE_WAL_TAGS_COMPRESSION =
"hbase.regionserver.wal.tags.enablecompression";
+ public static final String ENABLE_WAL_VALUE_COMPRESSION =
+ "hbase.regionserver.wal.value.enablecompression";
+
public enum DictionaryIndex {
REGION, TABLE, FAMILY, QUALIFIER, ROW
}
+ static class ValueCompressor {
+ final Deflater deflater;
+ final Inflater inflater;
+
+ public ValueCompressor() {
+ deflater = new Deflater();
+ inflater = new Inflater();
Review comment:
There is no sharing. One CompressionContext instance per WAL writer.
If there is sharing, WAL compression would already be thoroughly broken,
that is bad bad bad, dictionaries would be all messed up because they would be
updated with output going to different files (think about it, it cannot work)
--
This is an automated message from the Apache Git Service.
To respond to the message, please log on to GitHub and use the
URL above to go to the specific comment.
For queries about this service, please contact Infrastructure at:
us...@infra.apache.org
