Export MASTER_DATA_DIRECTORY while calling gpconfig

For gpdb applicance, there are certain GUCs which are set using
gpconfig, but currently it fails as MASTER_DATA_DIRECTORY is not
exported. This commit exports MASTER_DATA_DIRECTORY so that gpconfig
succeeds.

This commit also allows setting DCA_VERSION_FILE to enable testing.
Also add a test for the same to ensure that DCA
configuration GUCs are set properly on the environment.

gpMgmt/bin/gpinitsystem

@@ -81,7 +81,7 @@ STANDBY_RET_CODE=0
 #******************************************************************************
 # DCA Specific Variables
 #******************************************************************************
-DCA_VERSION_FILE="/etc/gpdb-appliance-version"
+DCA_VERSION_FILE="${__DCA_VERSION_FILE__:-/etc/gpdb-appliance-version}"
 
 DCA_RESQUEUE_PRIORITY_NAME="gp_resqueue_priority"
 DCA_RESQUEUE_PRIORITY_CPUCORES_PER_SEGMENT_NAME="gp_resqueue_priority_cpucores_per_segment"
@@ -1779,23 +1779,24 @@ CHK_QE_ARRAY_PORT_RANGES () {
 
 SET_DCA_CONFIG_SETTINGS () {
 	LOG_MSG "[INFO]:-Setting DCA specific configuration values..." 1
+	local master_data_directory="${MASTER_DIRECTORY}/${SEG_PREFIX}-1"
 
-	LOG_MSG "[INFO]:-$GPCONFIG -c $DCA_RESQUEUE_PRIORITY_NAME -v $DCA_SEGMENT_RESQUEUE_PRIORITY_VAL -m $DCA_MASTER_RESQUEUE_PRIORITY_VAL" 1
-	$GPCONFIG -c $DCA_RESQUEUE_PRIORITY_NAME -v $DCA_SEGMENT_RESQUEUE_PRIORITY_VAL -m $DCA_MASTER_RESQUEUE_PRIORITY_VAL
+	LOG_MSG "[INFO]:-MASTER_DATA_DIRECTORY=$master_data_directory $GPCONFIG -c $DCA_RESQUEUE_PRIORITY_NAME -v $DCA_SEGMENT_RESQUEUE_PRIORITY_VAL -m $DCA_MASTER_RESQUEUE_PRIORITY_VAL" 1
+	MASTER_DATA_DIRECTORY=$master_data_directory $GPCONFIG -c $DCA_RESQUEUE_PRIORITY_NAME -v $DCA_SEGMENT_RESQUEUE_PRIORITY_VAL -m $DCA_MASTER_RESQUEUE_PRIORITY_VAL
 	RETVAL=$?
 	if [ $RETVAL -ne 0 ]; then
 		LOG_MSG "[WARN]:-Failed to set value for $DCA_RESQUEUE_PRIORITY_NAME" 1
 	fi
 	
-	LOG_MSG "[INFO]:-$GPCONFIG -c $DCA_RESQUEUE_PRIORITY_CPUCORES_PER_SEGMENT_NAME -v $DCA_SEGMENT_RESQUEUE_PRIORITY_CPUCORES_PER_SEGMENT_VAL -m $DCA_MASTER_RESQUEUE_PRIORITY_CPUCORES_PER_SEGMENT_VAL" 1
-	$GPCONFIG -c $DCA_RESQUEUE_PRIORITY_CPUCORES_PER_SEGMENT_NAME -v $DCA_SEGMENT_RESQUEUE_PRIORITY_CPUCORES_PER_SEGMENT_VAL -m $DCA_MASTER_RESQUEUE_PRIORITY_CPUCORES_PER_SEGMENT_VAL
+	LOG_MSG "[INFO]:-MASTER_DATA_DIRECTORY=$master_data_directory $GPCONFIG -c $DCA_RESQUEUE_PRIORITY_CPUCORES_PER_SEGMENT_NAME -v $DCA_SEGMENT_RESQUEUE_PRIORITY_CPUCORES_PER_SEGMENT_VAL -m $DCA_MASTER_RESQUEUE_PRIORITY_CPUCORES_PER_SEGMENT_VAL" 1
+	MASTER_DATA_DIRECTORY=$master_data_directory $GPCONFIG -c $DCA_RESQUEUE_PRIORITY_CPUCORES_PER_SEGMENT_NAME -v $DCA_SEGMENT_RESQUEUE_PRIORITY_CPUCORES_PER_SEGMENT_VAL -m $DCA_MASTER_RESQUEUE_PRIORITY_CPUCORES_PER_SEGMENT_VAL
 	RETVAL=$?
 	if [ $RETVAL -ne 0 ]; then
 		LOG_MSG "[WARN]:-Failed to set value for $DCA_RESQUEUE_PRIORITY_CPUCORES_PER_SEGMENT_NAME" 1
 	fi
 
-	LOG_MSG "[INFO]:-$GPCONFIG -c $DCA_RESQUEUE_PRIORITY_SWEEPER_INTERVAL_NAME -v $DCA_SEGMENT_RESQUEUE_PRIORITY_SWEEPER_INTERVAL_VAL -m $DCA_MASTER_RESQUEUE_PRIORITY_SWEEPER_INTERVAL_VAL" 1
-	$GPCONFIG -c $DCA_RESQUEUE_PRIORITY_SWEEPER_INTERVAL_NAME -v $DCA_SEGMENT_RESQUEUE_PRIORITY_SWEEPER_INTERVAL_VAL -m $DCA_MASTER_RESQUEUE_PRIORITY_SWEEPER_INTERVAL_VAL
+	LOG_MSG "[INFO]:-MASTER_DATA_DIRECTORY=$master_data_directory $GPCONFIG -c $DCA_RESQUEUE_PRIORITY_SWEEPER_INTERVAL_NAME -v $DCA_SEGMENT_RESQUEUE_PRIORITY_SWEEPER_INTERVAL_VAL -m $DCA_MASTER_RESQUEUE_PRIORITY_SWEEPER_INTERVAL_VAL" 1
+	MASTER_DATA_DIRECTORY=$master_data_directory $GPCONFIG -c $DCA_RESQUEUE_PRIORITY_SWEEPER_INTERVAL_NAME -v $DCA_SEGMENT_RESQUEUE_PRIORITY_SWEEPER_INTERVAL_VAL -m $DCA_MASTER_RESQUEUE_PRIORITY_SWEEPER_INTERVAL_VAL
 	RETVAL=$?
 	if [ $RETVAL -ne 0 ]; then
 		LOG_MSG "[WARN]:-Failed to set value for $DCA_RESQUEUE_PRIORITY_SWEEPER_INTERVAL_NAME" 1

gpMgmt/test/behave/mgmt_utils/gpinitsystem.feature

@@ -184,3 +184,14 @@ Feature: gpinitsystem tests
         Then verify that the file "../gpAux/gpdemo/datadirs/qddir/demoDataDir-1/pg_hba.conf" contains FQDN only for trusted host
         And verify that the file "../gpAux/gpdemo/datadirs/dbfast1/demoDataDir0/pg_hba.conf" contains FQDN only for trusted host
         And verify that the file "../gpAux/gpdemo/datadirs/qddir/demoDataDir-1/newstandby/pg_hba.conf" contains FQDN only for trusted host
+
+    Scenario: gpinitsystem on a DCA system is able to set the DCA specific GUCs
+	Given create demo cluster config
+        And the user runs command "rm -r ~/gpAdminLogs/gpinitsystem*"
+        And a working directory of the test as '/tmp/gpinitsystem'
+        # create a dummy dca version file so that DCA specific parameters are set
+        And the user runs command "touch /tmp/gpinitsystem/gpdb-appliance-version"
+        When the user runs command "source $GPHOME/greenplum_path.sh; __DCA_VERSION_FILE__=/tmp/gpinitsystem/gpdb-appliance-version $GPHOME/bin/gpinitsystem -a -c ../gpAux/gpdemo/clusterConfigFile"
+        Then gpinitsystem should return a return code of 0
+        # the log file must have the entry indicating that DCA specific configuration has been set
+        And the user runs command "egrep 'Setting DCA specific configuration values' ~/gpAdminLogs/gpinitsystem*log"