10. Upgrade HBase

To upgrade HBase, run the following commands as the hadoop user at both the HBase Master and the RegionServers hosts:

Start the ZooKeeper service:
sc start zkServer
Check for HFiles in V1 format.
HBase 0.96.0 discontinues support for HFileV1, but HFileV1 was a common format prior to HBase 0.94. Before you upgrade, install the HBase 0.96 binaries on a separate host using the hbase-site.xml configutaion file from the running HBase 0.94 binaries. Then check for V1-format files as follows:
1. Download the 0.94.24+ HBase tarball in a machine.
2. Point its configuration file to a 0.94 cluster.
3. Check for HFiles in V1 format:
  ./bin/hbase org.apache.hadoop.hbase.util.HFileV1Detector -p hbase-root-data-path
4. In the results, if "Count of HFileV1" returns any files, start the HBase shell a use major compaction for regions that have FHFileV1 format.
Upgrade HBase.
%HBASE_HOME%\bin\hbase.cmd upgrade -execute
If the command completes successfully, you should see a completed Znode upgrade with no errors.
Start all REST HDP services.
sc start rest
If the Apache Hadoop REST service is disabled, run the following command to enable it:
sc config name= rest start= demand