Revert upgrading Hbase version

Author: zhangbutao

itests/util/src/main/java/org/apache/hadoop/hive/hbase/HBaseTestSetup.java

@@ -106,7 +106,7 @@ private void setUpFixtures(HiveConf conf) throws Exception {
         "org.apache.hadoop.hbase.shaded.");
 
     Configuration hbaseConf = HBaseConfiguration.create(conf);
-    // A workaround for HBASE-28908
+    // A workaround for HBASE-28908. Should be removed once HBase 2.7.0 is released & HIVE-28740 is fixed.
     hbaseConf.set("hbase.wal.provider", "filesystem");
     util = new HBaseTestingUtility(hbaseConf);
 

pom.xml

@@ -143,7 +143,7 @@
     <hadoop.version>3.4.1</hadoop.version>
     <hadoop.bin.path>${basedir}/${hive.path.to.root}/testutils/hadoop</hadoop.bin.path>
     <hamcrest.version>1.3</hamcrest.version>
-    <hbase.version>2.5.10-hadoop3</hbase.version>
+    <hbase.version>2.5.6-hadoop3</hbase.version>
     <hppc.version>0.7.2</hppc.version>
     <!-- required for logging test to avoid including hbase which pulls disruptor transitively -->
     <disruptor.version>3.3.7</disruptor.version>