timyuer commented on code in PR #3702:
URL: https://github.com/apache/ambari/pull/3702#discussion_r1247514610
##########
ambari-server/src/main/resources/stacks/BIGTOP/3.2.0/services/HBASE/package/scripts/hbase_regionserver.py:
##########
@@ -51,6 +55,57 @@ def configure(self, env):
def decommission(self, env):
print "Decommission not yet implemented!"
+ def graceful_stop(self, env, upgrade_type=None):
+ import params
+
+ # Mark Draining ZNode
+ params.hbase_drain_only = False
+ params.hbase_excluded_hosts = params.hostname
+ env.set_params(params)
+ hbase_decommission(env)
+
+ # Stop RegionServer
+ hbase_service('regionserver', action='stop')
+
+ # Remove from Draining ZNode to make host useable on restarting
regionserver
+ params.hbase_drain_only = True
+ env.set_params(params)
+ hbase_decommission(env)
+
+ def graceful_start(self, env, upgrade_type=None):
+ import params
+ env.set_params(params)
+
+ #Start RegionServer
+ hbase_service('regionserver', action='start')
+
+ # Load Regions back
+ kinit_cmd = params.kinit_cmd_master
+ host = params.hostname
+
+ regionmover_cmd = format(
+ "{kinit_cmd} HBASE_SERVER_JAAS_OPTS=\"{master_security_config}\"
{hbase_cmd} --config {hbase_conf_dir} {hbase_decommission_auth_config}
org.jruby.Main {region_mover} -m 24 load {host}")
+
+ try:
+ Execute(regionmover_cmd,
+ user=params.hbase_user,
+ logoutput=True
+ )
+ except Exception as e:
+ Logger.info("HBase 1: region_mover failed while loading regions back to
source RS." + str(e))
+ # Execute HBase 2 scripts if HBase 1 scripts fail.
+ # If the Exception is genuine, it will fail here because HBase 1 scripts
work only for HBase 1
+ # and HBase 2 scripts work only for HBase 2 cluster.
+ try:
+ regionmover_cmd = format(
+ "{kinit_cmd} HBASE_SERVER_JAAS_OPTS=\"{master_security_config}\"
{hbase_cmd} --config {hbase_conf_dir} {hbase_decommission_auth_config}
org.jruby.Main {region_mover} -m 24 -o load -r {host}")
+ Execute(regionmover_cmd,
+ user=params.hbase_user,
+ logoutput=True
+ )
Review Comment:
@virajjasani Thank you for your work.
Why don't we use HBase 2 scripts directly because HBase 1 scripts will fail
in the current stack (BIGTOP-3.2.0)?
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