From e7a540431019e6b5c877e90e8e66aadd850c2741 Mon Sep 17 00:00:00 2001
From: Mark Hale <mark.hale@physics.org>
Date: Thu, 26 Oct 2023 00:12:50 +0100
Subject: [PATCH] Improve bulk load performance by using a combiner.

---
 .../src/main/java/com/msd/gin/halyard/tools/HalyardBulkLoad.java | 1 +
 1 file changed, 1 insertion(+)

diff --git a/tools/src/main/java/com/msd/gin/halyard/tools/HalyardBulkLoad.java b/tools/src/main/java/com/msd/gin/halyard/tools/HalyardBulkLoad.java
index ef8bcc5b2..2ea79a0eb 100644
--- a/tools/src/main/java/com/msd/gin/halyard/tools/HalyardBulkLoad.java
+++ b/tools/src/main/java/com/msd/gin/halyard/tools/HalyardBulkLoad.java
@@ -721,6 +721,7 @@ protected int run(CommandLine cmd) throws Exception {
 				tableDesc = hTable.getDescriptor();
 				RegionLocator regionLocator = conn.getRegionLocator(tableDesc.getTableName());
 				HFileOutputFormat2.configureIncrementalLoad(job, tableDesc, regionLocator);
+				job.setCombinerClass(job.getReducerClass());
 	        }
             try (Keyspace keyspace = HalyardTableUtils.getKeyspace(getConf(), conn, tableDesc.getTableName(), null, null)) {
             	try (KeyspaceConnection ksConn = keyspace.getConnection()) {