This is the documentation for CDH 5.1.x. Documentation for other versions is available at Cloudera Documentation.

Configuring Oozie

This section explains how to configure which Hadoop version to use, and provides separate procedures for each of the following:

Configuring which Hadoop Version to Use

The Oozie client does not interact directly with Hadoop MapReduce, and so it does not require any MapReduce configuration.

The Oozie server can work with either MRv1 or YARN. It cannot work with both simultaneously.

You set the MapReduce version the Oozie server works with by means of the alternatives command (or update-alternatives, depending on your operating system). As well as distinguishing between YARN and MRv1, the commands differ depending on whether or not you are using SSL.
  • To use YARN (without SSL):
    alternatives --set oozie-tomcat-conf /etc/oozie/tomcat-conf.http
  • To use YARN (with SSL):
    alternatives --set oozie-tomcat-conf /etc/oozie/tomcat-conf.https
  • To use MRv1(without SSL) :
    alternatives --set oozie-tomcat-conf /etc/oozie/tomcat-conf.http.mr1
  • To use MRv1(with SSL) :
    alternatives --set oozie-tomcat-conf /etc/oozie/tomcat-conf.https.mr1
CAUTION:

Do this while the Oozie server is not running.

If you change the MapReduce version on an Oozie server running workflows that use the other version of MapReduce (the version you are changing from; for example MRv1) all those jobs will fail.

  Important: If you are upgrading from a release earlier than CDH 5 Beta 2
In earlier releases, the mechanism for setting the MapReduce version was the CATALINA_BASE variable in /etc/oozie/conf/oozie-env.sh. This does not work as of CDH 5 Beta 2, and in fact could cause problems. Check your /etc/oozie/conf/oozie-env.sh and make sure you have the new version. The new version contains the line: 
export CATALINA_BASE=/var/lib/oozie/tomcat-deployment

Configuring Oozie after Upgrading from CDH 4

  Note:

If you are installing Oozie for the first time, skip this section and proceed with Configuring Oozie after a New Installation.

Step 1: Update Configuration Files

  1. Edit the new Oozie CDH 5 oozie-site.xml, and set all customizable properties to the values you set in the CDH 4 oozie-site.xml:
      Important:

    DO NOT copy over the CDH 4 configuration files into the CDH 5 configuration directory.

  2. If necessary do the same for the oozie-log4j.properties, oozie-env.sh and the adminusers.txt files.

Step 2: Upgrade the Database

  Important:
  • Do not proceed before you have edited the configuration files as instructed in Step 1.
  • Before running the database upgrade tool, copy or symbolically link the JDBC driver JAR for the database you are using into the /var/lib/oozie/ directory.

Oozie CDH 5 provides a command-line tool to perform the database schema and data upgrade that is required when you upgrade Oozie from CDH 4 to CDH 5. The tool uses Oozie configuration files to connect to the database and perform the upgrade.

The database upgrade tool works in two modes: it can do the upgrade in the database or it can produce an SQL script that a database administrator can run manually. If you use the tool to perform the upgrade, you must do it as a database user who has permissions to run DDL operations in the Oozie database.
  • To run the Oozie database upgrade tool against the database:
      Important:

    This step must be done as the oozie Unix user, otherwise Oozie may fail to start or work properly because of incorrect file permissions. 

    $ sudo -u oozie /usr/lib/oozie/bin/ooziedb.sh upgrade -run
    You will see output such as this (the output of the script may differ slightly depending on the database vendor): 
    Validate DB Connection
DONE
Check DB schema exists
DONE
Verify there are not active Workflow Jobs
DONE
Check OOZIE_SYS table does not exist
DONE
Get Oozie DB version
DONE
Upgrade SQL schema
DONE
Upgrading to db schema for Oozie 4.0
Update db.version in OOZIE_SYS table to 2
DONE
Post-upgrade COORD_JOBS new columns default values
DONE
Post-upgrade COORD_JOBS & COORD_ACTIONS status values
DONE
Post-upgrade MISSING_DEPENDENCIES column in Derby
DONE
Table 'WF_ACTIONS' column 'execution_path', length changed to 1024
Table 'WF_ACTIONS, column 'error_message', changed to varchar/varchar2
Table 'COORD_JOB' column 'frequency' changed to varchar/varchar2
DONE
Post-upgrade BUNDLE_JOBS, COORD_JOBS, WF_JOBS to drop AUTH_TOKEN column
DONE
Upgrading to db schema for Oozie 4.0.0-cdh5.0.0
Update db.version in OOZIE_SYS table to 3
DONE
Dropping discriminator column
DONE

Oozie DB has been upgraded to Oozie version '4.0.0-cdh5.0.0’

The SQL commands have been written to: /tmp/ooziedb-3809837539907706.sql
  • To create the upgrade script:
      Important:
    This step must be done as the oozie Unix user, otherwise Oozie may fail to start or work properly because of incorrect file permissions.
    $ sudo -u oozie /usr/lib/oozie/bin/ooziedb.sh upgrade -sqlfile <SCRIPT>
    For example: 
    $ sudo -u oozie /usr/lib/bin/ooziedb.sh upgrade -sqlfile oozie-upgrade.sql
    You should see output such as the following (the output of the script may differ slightly depending on the database vendor): 
    Validate DB Connection
DONE
Check DB schema exists
DONE
Verify there are not active Workflow Jobs
DONE
Check OOZIE_SYS table does not exist
DONE
Get Oozie DB version
DONE
Upgrade SQL schema
DONE
Upgrading to db schema for Oozie 4.0
Update db.version in OOZIE_SYS table to 2
DONE
Post-upgrade COORD_JOBS new columns default values
DONE
Post-upgrade COORD_JOBS & COORD_ACTIONS status values
DONE
Post-upgrade MISSING_DEPENDENCIES column in Derby
DONE
Table 'WF_ACTIONS' column 'execution_path', length changed to 1024
Table 'WF_ACTIONS, column 'error_message', changed to varchar/varchar2
Table 'COORD_JOB' column 'frequency' changed to varchar/varchar2
DONE
Post-upgrade BUNDLE_JOBS, COORD_JOBS, WF_JOBS to drop AUTH_TOKEN column
DONE
Upgrading to db schema for Oozie 4.0.0-cdh5.0.0
Update db.version in OOZIE_SYS table to 3
DONE
Dropping discriminator column
DONE

The SQL commands have been written to: oozie-upgrade.sql

WARN: The SQL commands have NOT been executed, you must use the '-run' option
      Important:

    If you used the -sqlfile option instead of -run, Oozie database schema has not been upgraded. You need to run the oozie-upgrade script against your database.

Step 3: Upgrade the Oozie Shared Library

  Important:

This step is required; CDH 5 Oozie does not work with CDH 4 shared libraries.

CDH 5 Oozie has a new shared library which bundles CDH 5 JAR files for streaming, DistCp and for Pig, Hive, HiveServer 2, Sqoop, and HCatalog.

  Note:

The Oozie installation bundles two shared libraries, one for MRv1 and one for YARN. Make sure you install the right one for the MapReduce version you are using:

  • The shared library file for YARN is oozie-sharelib-yarn.tar.gz.
  • The shared library file for MRv1 is oozie-sharelib-mr1.tar.gz.
Proceed as follows to upgrade the shared library.
  1. Delete the Oozie shared libraries from HDFS. For example: 
    $ sudo -u oozie hadoop fs -rmr /user/oozie/share
      Note:
    • If Kerberos is enabled, do not use commands in the form sudo -u <user> hadoop <command>; they will fail with a security error. Instead, use the following commands: $ kinit <user> (if you are using a password) or $ kinit -kt <keytab> <principal> (if you are using a keytab) and then, for each command executed by this user, $ <command>
    • If the current shared libraries are in another location, make sure you use this other location when you run the above command(s).
  2. install the Oozie CDH 5 shared libraries. For example: 
    $ sudo oozie-setup sharelib create -fs <FS_URI> -locallib /usr/lib/oozie/oozie-sharelib-yarn.tar.gz

    where FS_URI is the HDFS URI of the filesystem that the shared library should be installed on (for example, hdfs://<HOST>:<PORT>).

      Important:

    If you are installing Oozie to work with MRv1, make sure you use oozie-sharelib-mr1.tar.gz instead.

Step 4: Start the Oozie Server

Now you can start Oozie: 

$ sudo service oozie start

Check Oozie's oozie.log to verify that Oozie has started successfully.

Step 5: Upgrade the Oozie Client

Although older Oozie clients work with the new Oozie server, you need to install the new version of the Oozie client in order to use all the functionality of the Oozie server.

To upgrade the Oozie client, if you have not already done so, follow the steps under Installing Oozie.

Configuring Oozie after Upgrading from an Earlier CDH 5 Release

  Note:

If you are installing Oozie for the first time, skip this section and proceed with Configuring Oozie after a New Installation.

Step 1: Update Configuration Files

  1. Edit the new Oozie CDH 5 oozie-site.xml, and set all customizable properties to the values you set in the previous oozie-site.xml.
  2. If necessary do the same for the oozie-log4j.properties, oozie-env.sh and the adminusers.txt files.

Step 2: Upgrade the Database

  Important:
  • Do not proceed before you have edited the configuration files as instructed in Step 1.
  • Before running the database upgrade tool, copy or symbolically link the JDBC driver JAR for the database you are using into the /var/lib/oozie/ directory.

Oozie CDH 5 provides a command-line tool to perform the database schema and data upgrade. The tool uses Oozie configuration files to connect to the database and perform the upgrade.

The database upgrade tool works in two modes: it can do the upgrade in the database or it can produce an SQL script that a database administrator can run manually. If you use the tool to perform the upgrade, you must do it as a database user who has permissions to run DDL operations in the Oozie database.

  • To run the Oozie database upgrade tool against the database:
      Important:

    This step must be done as the oozie Unix user, otherwise Oozie may fail to start or work properly because of incorrect file permissions. 

    $ sudo -u oozie /usr/lib/oozie/bin/ooziedb.sh upgrade -run
    You will see output such as this (the output of the script may differ slightly depending on the database vendor): 
    Validate DB Connection
DONE
Check DB schema exists
DONE
Verify there are not active Workflow Jobs
DONE
Check OOZIE_SYS table does not exist
DONE
Get Oozie DB version
DONE
Upgrade SQL schema
DONE
Upgrading to db schema for Oozie 4.0.0-cdh5.0.0
Update db.version in OOZIE_SYS table to 3
DONE
Converting text columns to bytea for all tables
DONE
Get Oozie DB version
DONE

Oozie DB has been upgraded to Oozie version '4.0.0-cdh5.0.0'

The SQL commands have been written to: /tmp/ooziedb-8676029205446760413.sql
  • To create the upgrade script:
      Important:

    This step must be done as the oozie Unix user, otherwise Oozie may fail to start or work properly because of incorrect file permissions. 

    $ sudo -u oozie /usr/lib/oozie/bin/ooziedb.sh upgrade -sqlfile <SCRIPT>
    For example:
    $ sudo -u oozie /usr/lib/bin/ooziedb.sh upgrade -sqlfile oozie-upgrade.sql
    You should see output such as the following (the output of the script may differ slightly depending on the database vendor): 
    Validate DB Connection
DONE
Check DB schema exists
DONE
Verify there are not active Workflow Jobs
DONE
Check OOZIE_SYS table does not exist
DONE
Get Oozie DB version
DONE
Upgrade SQL schema
DONE
Upgrading to db schema for Oozie 4.0.0-cdh5.0.0
Update db.version in OOZIE_SYS table to 3
DONE
Converting text columns to bytea for all tables
DONE
Get Oozie DB version
DONE

The SQL commands have been written to: oozie-upgrade.sql

WARN: The SQL commands have NOT been executed, you must use the '-run' option
      Important:

    If you used the -sqlfile option instead of -run, Oozie database schema has not been upgraded. You need to run the oozie-upgrade script against your database.

Step 3: Upgrade the Oozie Shared Library

  Important:

This step is required; the current version of Oozie does not work with shared libraries from an earlier version.

The Oozie installation bundles two shared libraries, one for MRv1 and one for YARN. Make sure you install the right one for the MapReduce version you are using:

  • The shared library file for YARN is oozie-sharelib-yarn.tar.gz.
  • The shared library file for MRv1 is oozie-sharelib-mr1.tar.gz.

To upgrade the shared library, proceed as follows.

  1. Delete the Oozie shared libraries from HDFS. For example: 
    $ sudo -u oozie hadoop fs -rmr /user/oozie/share
      Note:
    • If Kerberos is enabled, do not use commands in the form sudo -u <user> <command>; they will fail with a security error. Instead, use the following commands: $ kinit <user> (if you are using a password) or $ kinit -kt <keytab> <principal> (if you are using a keytab) and then, for each command executed by this user, $ <command>
    • If the current shared libraries are in another location, make sure you use this other location when you run the above command(s).
  2. install the Oozie CDH 5 shared libraries. For example: 
    $ sudo oozie-setup sharelib create -fs <FS_URI> -locallib /usr/lib/oozie/oozie-sharelib-yarn.tar.gz
    where FS_URI is the HDFS URI of the filesystem that the shared library should be installed on (for example, hdfs://<HOST>:<PORT>).
      Important:

    If you are installing Oozie to work with MRv1, make sure you use oozie-sharelib-mr1.tar.gz instead.

Step 4: Start the Oozie Server

Now you can start Oozie: 
$ sudo service oozie start

Check Oozie's oozie.log to verify that Oozie has started successfully.

Step 5: Upgrade the Oozie Client

Although older Oozie clients work with the new Oozie server, you need to install the new version of the Oozie client in order to use all the functionality of the Oozie server.

To upgrade the Oozie client, if you have not already done so, follow the steps under Installing Oozie.

Configuring Oozie after a New Installation

  Note:

Follow the instructions in this section if you are installing Oozie for the first time. If you are upgrading Oozie from CDH 4 or from an earlier CDH 5 release, skip this subsection and choose the appropriate instructions earlier in this section: Configuring Oozie after Upgrading from CDH 4 or Configuring Oozie after Upgrading from an Earlier CDH 5 Release.

When you install Oozie from an RPM or Debian package, Oozie server creates all configuration, documentation, and runtime files in the standard Linux directories, as follows.

Type of File

Where Installed

binaries 

/usr/lib/oozie/

configuration 

/etc/oozie/conf/

documentation

for SLES: /usr/share/doc/packages/oozie/ for other platforms: /usr/share/doc/oozie/

examples TAR.GZ

for SLES: /usr/share/doc/packages/oozie/ for other platforms: /usr/share/doc/oozie/

sharelib TAR.GZ 

/usr/lib/oozie/

data 

/var/lib/oozie/

logs 

/var/log/oozie/

temp 

/var/tmp/oozie/

PID file 

/var/run/oozie/

Deciding which Database to Use

Oozie has a built-in Derby database, but Cloudera recommends that you use a Postgres, MySQL, or Oracle database instead, for the following reasons:
  • Derby runs in embedded mode and it is not possible to monitor its health.
  • It is not clear how to implement a live backup strategy for the embedded Derby database, though it may be possible.
  • Under load, Cloudera has observed locks and rollbacks with the embedded Derby database which don't happen with server-based databases.

Configuring Oozie to Use PostgreSQL

Use the procedure that follows to configure Oozie to use PostgreSQL instead of Apache Derby.

Step 1: Install PostgreSQL 8.4.x or 9.0.x.

  Note:

See CDH 5 Requirements and Supported Versions for tested versions.

Step 2: Create the Oozie user and Oozie database.

For example, using the PostgreSQL psql command-line tool: 

$ psql -U postgres
Password for user postgres: *****

postgres=# CREATE ROLE oozie LOGIN ENCRYPTED PASSWORD 'oozie'
 NOSUPERUSER INHERIT CREATEDB NOCREATEROLE;
CREATE ROLE

postgres=# CREATE DATABASE "oozie" WITH OWNER = oozie
 ENCODING = 'UTF8'
 TABLESPACE = pg_default
 LC_COLLATE = 'en_US.UTF8'
 LC_CTYPE = 'en_US.UTF8'
 CONNECTION LIMIT = -1;
CREATE DATABASE

postgres=# \q

Step 3: Configure PostgreSQL to accept network connections for user oozie.

  1. Edit the postgresql.conf file and set the listen_addresses property to *, to make sure that the PostgreSQL server starts listening on all your network interfaces. Also make sure that the standard_conforming_strings property is set to off.
  2. Edit the PostgreSQL data/pg_hba.conf file as follows:
    host    oozie         oozie         0.0.0.0/0             md5

Edit the PostgreSQL data/pg_hba.conf file as follows: 

host    oozie         oozie         0.0.0.0/0             md5

Step 4: Reload the PostgreSQL configuration.

$ sudo -u postgres pg_ctl reload -s -D /opt/PostgreSQL/8.4/data

Step 5: Configure Oozie to use PostgreSQL

Edit the oozie-site.xml file as follows: 

...
    <property>
        <name>oozie.service.JPAService.jdbc.driver</name>
        <value>org.postgresql.Driver</value>
    </property>
    <property>
        <name>oozie.service.JPAService.jdbc.url</name>
        <value>jdbc:postgresql://localhost:5432/oozie</value>
    </property>
    <property>
        <name>oozie.service.JPAService.jdbc.username</name>
        <value>oozie</value>
    </property>
    <property>
        <name>oozie.service.JPAService.jdbc.password</name>
        <value>oozie</value>
    </property>
    ...
  Note:

In the JDBC URL property, replace localhost with the hostname where PostgreSQL is running.

In the case of PostgreSQL, unlike MySQL or Oracle, there is no need to download and install the JDBC driver separately, as it is license-compatible with Oozie and bundled with it.

Configuring Oozie to Use MySQL

Use the procedure that follows to configure Oozie to use MySQL instead of Apache Derby.

Step 1: Install and start MySQL 5.x

  Note:

See CDH 5 Requirements and Supported Versions for tested versions.

Step 2: Create the Oozie database and Oozie MySQL user.

For example, using the MySQL mysql command-line tool: 

$ mysql -u root -p
Enter password: ******

mysql> create database oozie;
Query OK, 1 row affected (0.03 sec)

mysql>  grant all privileges on oozie.* to 'oozie'@'localhost' identified by 'oozie';
Query OK, 0 rows affected (0.03 sec)

mysql>  grant all privileges on oozie.* to 'oozie'@'%' identified by 'oozie';
Query OK, 0 rows affected (0.03 sec)

mysql> exit
Bye

Step 3: Configure Oozie to use MySQL.

Edit properties in the oozie-site.xml file as follows: 

...
    <property>
        <name>oozie.service.JPAService.jdbc.driver</name>
        <value>com.mysql.jdbc.Driver</value>
    </property>
    <property>
        <name>oozie.service.JPAService.jdbc.url</name>
        <value>jdbc:mysql://localhost:3306/oozie</value>
    </property>
    <property>
        <name>oozie.service.JPAService.jdbc.username</name>
        <value>oozie</value>
    </property>
    <property>
        <name>oozie.service.JPAService.jdbc.password</name>
        <value>oozie</value>
    </property>
    ...
  Note:

In the JDBC URL property, replace localhost with the hostname where MySQL is running.

Step 4: Add the MySQL JDBC driver JAR to Oozie.

Copy or symbolically link the MySQL JDBC driver JAR into the /var/lib/oozie/ directory.
  Note:

You must manually download the MySQL JDBC driver JAR file.

Configuring Oozie to use Oracle

Use the procedure that follows to configure Oozie to use Oracle 11g instead of Apache Derby.
  Note:

See CDH 5 Requirements and Supported Versions for tested versions.

Step 1: Install and start Oracle 11g.

Use Oracle's instructions.

Step 2: Create the Oozie Oracle user.

For example, using the Oracle sqlplus command-line tool: 

$ sqlplus system@localhost

Enter password: ******

SQL> create user oozie identified by oozie default tablespace users temporary tablespace temp;

User created.

SQL> grant all privileges to oozie;

Grant succeeded.

SQL> exit

$

Step 3: Configure Oozie to use Oracle.

Edit the oozie-site.xml file as follows. 

...
    <property>
        <name>oozie.service.JPAService.jdbc.driver</name>
        <value>oracle.jdbc.OracleDriver</value>
    </property>
    <property>
        <name>oozie.service.JPAService.jdbc.url</name>
        <value>jdbc:oracle:thin:@//myhost:1521/oozie</value>
    </property>
    <property>
        <name>oozie.service.JPAService.jdbc.username</name>
        <value>oozie</value>
    </property>
    <property>
        <name>oozie.service.JPAService.jdbc.password</name>
        <value>oozie</value>
    </property>
    ...
  Note:

In the JDBC URL property, replace myhost with the hostname where Oracle is running and replace oozie with the TNS name of the Oracle database.

Step 4: Add the Oracle JDBC driver JAR to Oozie.

Copy or symbolically link the Oracle JDBC driver JAR into the /var/lib/oozie/ directory.

  Note:

You must manually download the Oracle JDBC driver JAR file.

Creating the Oozie Database Schema

After configuring Oozie database information and creating the corresponding database, create the Oozie database schema. Oozie provides a database tool for this purpose.
  Note:

The Oozie database tool uses Oozie configuration files to connect to the database to perform the schema creation; before you use the tool, make you have created a database and configured Oozie to work with it as described above.

The Oozie database tool works in 2 modes: it can create the database, or it can produce an SQL script that a database administrator can run to create the database manually. If you use the tool to create the database schema, you must have the permissions needed to execute DDL operations.

To run the Oozie database tool against the database

  Important:

This step must be done as the oozie Unix user, otherwise Oozie may fail to start or work properly because of incorrect file permissions. 

$ sudo -u oozie /usr/lib/oozie/bin/ooziedb.sh create -run

You should see output such as the following (the output of the script may differ slightly depending on the database vendor) : 

Validate DB Connection.
DONE
Check DB schema does not exist
DONE
Check OOZIE_SYS table does not exist
DONE
Create SQL schema
DONE
DONE
Create OOZIE_SYS table
DONE

Oozie DB has been created for Oozie version '4.0.0-cdh5.0.0'

The SQL commands have been written to: /tmp/ooziedb-5737263881793872034.sql

To create the upgrade script

  Important:

This step must be done as the oozie Unix user, otherwise Oozie may fail to start or work properly because of incorrect file permissions.

Run /usr/lib/oozie/bin/ooziedb.sh create -sqlfile <SCRIPT>. For example: 

$ sudo -u oozie /usr/lib/oozie/bin/ooziedb.sh create -sqlfile oozie-create.sql

You should see output such as the following (the output of the script may differ slightly depending on the database vendor) : 

Validate DB Connection.
DONE
Check DB schema does not exist
DONE
Check OOZIE_SYS table does not exist
DONE
Create SQL schema
DONE
DONE
Create OOZIE_SYS table
DONE

Oozie DB has been created for Oozie version '4.0.0-cdh5.0.0'

The SQL commands have been written to: oozie-create.sql

WARN: The SQL commands have NOT been executed, you must use the '-run' option
  Important:

If you used the -sqlfile option instead of -run, Oozie database schema has not been created. You need to run the oozie-create.sql script against your database.

Enabling the Oozie Web Console

To enable Oozie's web console, you must download and add the ExtJS library to the Oozie server. If you have not already done this, proceed as follows.

Step 1: Download the Library

Download the ExtJS version 2.2 library from http://archive.cloudera.com/gplextras/misc/ext-2.2.zip and place it a convenient location.

Step 2: Install the Library

Extract the ext-2.2.zip file into /var/lib/oozie.

Configuring Oozie with Kerberos Security

To configure Oozie with Kerberos security, see Oozie Security Configuration.

Installing the Oozie Shared Library in Hadoop HDFS

The Oozie installation bundles the Oozie shared library, which contains all of the necessary JARs to enable workflow jobs to run streaming, DistCp, Pig, Hive, and Sqoop actions.

The Oozie installation bundles two shared libraries, one for MRv1 and one for YARN. Make sure you install the right one for the MapReduce version you are using:

  • The shared library file for MRv1 is oozie-sharelib-mr1.tar.gz.
  • The shared library file for YARN is oozie-sharelib-yarn.tar.gz.
  Important:

If Hadoop is configured with Kerberos security enabled, you must first configure Oozie with Kerberos Authentication. For instructions, see Oozie Security Configuration. Before running the commands in the following instructions, you must run the sudo -u oozie kinit -k -t /etc/oozie/oozie.keytab and kinit -k hdfs commands. Then, instead of using commands in the form sudo -u <user> <command>, use just <command>; for example, $ hadoop fs -mkdir /user/oozie

To install the Oozie shared library in Hadoop HDFS in the oozie user home directory

$ sudo -u hdfs hadoop fs -mkdir /user/oozie
$ sudo -u hdfs hadoop fs -chown oozie:oozie /user/oozie
$ sudo oozie-setup sharelib create -fs <FS_URI> -locallib /usr/lib/oozie/oozie-sharelib-yarn.tar.gz

where FS_URI is the HDFS URI of the filesystem that the shared library should be installed on (for example, hdfs://<HOST>:<PORT>).

  Important:

If you are installing Oozie to work with MRv1 use oozie-sharelib-mr1.tar.gz instead.

Configuring Support for Oozie Uber JARs

An uber JAR is a JAR that contains other JARs with dependencies in a lib/ folder inside the JAR. You can configure the cluster to handle uber JARs properly for the MapReduce action (as long as it does not include any streaming or pipes) by setting the following property in the oozie-site.xml file: 

...
    <property>
        <name>oozie.action.mapreduce.uber.jar.enable</name>
    <value>true</value>

    ...

When this property is set, users can use the oozie.mapreduce.uber.jar configuration property in their MapReduce workflows to notify Oozie that the specified JAR file is an uber JAR.

Configuring Oozie to Run against a Federated Cluster

To run Oozie against a federated HDFS cluster using ViewFS, configure the oozie.service.HadoopAccessorService.supported.filesystems property in oozie-site.xml as follows: 

<property>
     <name>oozie.service.HadoopAccessorService.supported.filesystems</name>
     <value>hdfs,viewfs</value>
</property>
Page generated September 3, 2015.