JiaLiangC commented on code in PR #3790:
URL: https://github.com/apache/ambari/pull/3790#discussion_r1663591554
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ambari-server/src/main/resources/stacks/BIGTOP/3.2.0/services/LIVY/role_command_order.json:
##########
@@ -0,0 +1,8 @@
+{
+ "general_deps" : {
+ "_comment" : "dependencies for LIVY",
+ "LIVY_SERVER-START" :
["SPARK_THRIFTSERVER-START","SPARK_JOBHISTORYSERVER-START"],
Review Comment:
The startup of Livy does not seem to rely on the startup of Spark STS; there
is no direct relationship between them.
##########
ambari-server/src/main/resources/stacks/BIGTOP/3.2.0/services/LIVY/metainfo.xml:
##########
@@ -0,0 +1,125 @@
+<?xml version="1.0"?>
+<!--Licensed to the Apache Software Foundation (ASF) under one
+* or more contributor license agreements. See the NOTICE file
+* distributed with this work for additional information
+* regarding copyright ownership. The ASF licenses this file
+* to you under the Apache License, Version 2.0 (the
+* "License"); you may not use this file except in compliance
+* with the License. You may obtain a copy of the License at
+*
+* http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*/
+-->
+<metainfo>
+ <schemaVersion>2.0</schemaVersion>
+ <services>
+ <service>
+ <name>LIVY</name>
+ <displayName>Livy</displayName>
+ <comment>Apache Livy is a service that enables easy interaction with a
Spark cluster over a REST interface. </comment>
+ <version>0.7.1-1</version>
+ <components>
+ <component>
+ <name>LIVY_SERVER</name>
+ <displayName>Livy Server</displayName>
+ <category>MASTER</category>
+ <cardinality>1+</cardinality>
+ <versionAdvertised>true</versionAdvertised>
+ <dependencies>
+ <dependency>
+ <name>SPARK/SPARK_CLIENT</name>
+ <scope>host</scope>
+ <auto-deploy>
+ <enabled>true</enabled>
+ </auto-deploy>
+ </dependency>
+ <dependency>
+ <name>HDFS/HDFS_CLIENT</name>
+ <scope>host</scope>
+ <auto-deploy>
+ <enabled>true</enabled>
+ </auto-deploy>
+ </dependency>
+ <dependency>
+ <name>YARN/YARN_CLIENT</name>
+ <scope>host</scope>
+ <auto-deploy>
+ <enabled>true</enabled>
+ </auto-deploy>
+ </dependency>
+ </dependencies>
+ <commandScript>
+ <script>scripts/livy_server.py</script>
+ <scriptType>PYTHON</scriptType>
+ <timeout>600</timeout>
+ </commandScript>
+ <logs>
+ <log>
+ <logId>livy_server</logId>
+ <primary>true</primary>
+ </log>
+ </logs>
+ </component>
+ </components>
+
+ <configuration-dependencies>
+ <config-type>core-site</config-type>
+ <config-type>spark-defaults</config-type>
+ <config-type>spark-env</config-type>
+ <config-type>spark-log4j-properties</config-type>
+ <config-type>spark-metrics-properties</config-type>
+ <config-type>spark-hive-site-override</config-type>
+ <config-type>spark-thrift-fairscheduler</config-type>
+ <config-type>livy-client-conf</config-type>
+ <config-type>livy-conf</config-type>
+ <config-type>livy-env</config-type>
+ <config-type>livy-log4j-properties</config-type>
+ <config-type>livy-spark-blacklist</config-type>
+ </configuration-dependencies>
+
+ <commandScript>
+ <script>scripts/service_check.py</script>
+ <scriptType>PYTHON</scriptType>
+ <timeout>300</timeout>
+ </commandScript>
+
+ <requiredServices>
+ <service>HDFS</service>
+ <service>YARN</service>
+ <service>HIVE</service>
Review Comment:
It seems that Livy does not depend on Hive.
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