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HOW TO: Start and Stop Blaze Grid Manager and Blaze Job Monitor Applications of Informatica
Solution
Informatica 'Data Engineering Integration' (DEI), earlier known as 'Big Data Management' (BDM), supports execution of mappings in the Hadoop Environment. For running mappings in Hadoop Environments, one of the following execution engines can be chosen:

 

  1. Spark Engine
  2. Blaze Engine
  3. Hive Engine ('Map Reduce' or 'Tez' modes)  (Available in Pre-Informatica 10.2.2 versions and not available from Informatica 10.2.2 version onwards)​

  

Informatica Blaze engine integrates with Apache Hadoop YARN to provide intelligent data pipelining, job partitioning, job recovery, and high-performance scaling. Blaze Engine consists of 'Blaze Grid Manager' and 'Blaze Job Monitor' applications, which would be running in one of the Hadoop Data Node machines.

 

Start Blaze Engine


Blaze Engine Applications (Blaze Grid Manager, Blaze Job Monitor) would be automatically started in the Hadoop cluster, while running mappings/Workflows using 'Blaze' as 'Hadoop Execution Engine' .


2017_11_01_Blaze_Engine_Mapping_1.png
 

Blaze Applications would be started during the first instance of the mapping run using 'Blaze' option and its state can be verified by logging into YARN Resource Manager Web UI. Following is the status of 'Blaze Grid Manager' application, that can be observed from 'YARN Resource Manager': 
 
2017_11_01_Blaze_Grid_Manager_Application_from_YARN.png 
Stop Blaze Engine



For stopping Blaze Engine applications, perform the following steps:
 
  1. ​​Login to Informatica Server machine.
  2. Navigate to '$INFA_HOME/server/bin' location.
  3. Run the following infacmd command:

./infacmd.sh dis stopBlazeService -dn [domain_name] -un [informatica_user] -pd [informatica_user_password] -sdn [security_domain_of_infa_user] -sn [dis_used_for_blaze] -hc [hadoop_pushdown_connection_name]

-- Substitute 'Domain Name', 'Informatica User Name' 'User password', 'DIS' and 'Hadoop Connection' parameters with appropriate values corresponding to your Environment.

Example:

./infacmd.sh dis stopBlazeService -dn D_Galaxias -un Administrator -pd *** -sdn Native -sn DIS_Galaxias_HDP -hc HADOOP_HDP_25_30_Oct_2017_CCO

***** NOTE:- Username specified with 'infacmd dis stopBlazeService' command, is the Informatica Domain User (E.g. Administrator) and not the Operating System (OS) user, who started Informatica services. Informatica Domain User, used in the 'infacmd' command, should have execute privileges on the 'Hadoop Pushdown Connection'. 

The above command execution should stop the Blaze Grid manager and Blaze Job monitor applications running in the Hadoop Cluster. It can be confirmed  by logging into YARN Resource Manager Web UI for the Hadoop cluster.​​​​​

More Information

Starting from Informatica 10.2.0 version, only 'Blaze Grid Manager' application would be visible in 'YARN Resource Manager UI'. 'Blaze Job Monitor' application would be started internally, as part of 'Blaze Grid Manager' application. Hence, if the 'Blaze Grid Manager application' is stopped, 'Blaze Job Monitor' would also be automatically stopped. 

Reference
Applies To
Product: Data Engineering Integration(Big Data Management); Data Engineering Quality(Big Data Quality)
Problem Type: Product Feature
User Type: Developer
Project Phase: Implement; Onboard
Product Version: Informatica 10.1; Informatica 10.1.1; Informatica 10.2; HotFix; Informatica 10.2.1; Informatica 10.2.1 Service Pack 1; Informatica 10.2.2; Informatica 10.4
Database:
Operating System: Linux
Other Software:
Attachments
Last Modified Date:4/2/2020 12:47 AMID:521162
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