oozie error: Accessing local file system is not allowed - hdfs

Question

Sqoop import action is giving error while running as an oozie job.
I am using a pesudo-distributed hadoop cluster.
I have followed the following steps.
1.Started oozie server
2.edited job.properties and workflow.xml files
3.copied workflow.xml into hdfs
4.ran oozie job
my job.properties file
nameNode=hdfs://localhost:8020
jobTracker=localhost:8021
queueName=default
examplesRoot=examples
oozie.use.system.libpath=true
oozie.wf.application.path=${nameNode}/user/hduser/${examplesRoot}/apps/sqoop
workflow.xml file
<action name="sqoop-node">
<sqoop xmlns="uri:oozie:sqoop-action:0.2">
<job-tracker>${jobTracker}</job-tracker>
<name-node>${nameNode}</name-node>
<prepare>
<delete path="${nameNode}/user/hduser/${examplesRoot}/output-data/sqoop"/>
<!--<mkdir path="${nameNode}/user/hduser/${examplesRoot}/output-data"/>-->
</prepare>
<configuration>
<property>
<name>mapred.job.queue.name</name>
<value>${queueName}</value>
</property>
</configuration>
<command>import --connect "jdbc:mysql://localhost/db" --username user --password pass --table "table" --where "Conditions" --driver com.mysql.jdbc.Driver --target-dir ${nameNode}/user/hduser/${examplesRoot}/output-data/sqoop -m 1</command>
<!--<file>db.hsqldb.properties#db.hsqldb.properties</file>
<file>db.hsqldb.script#db.hsqldb.script</file>-->
</sqoop>
<ok to="end"/>
<error to="fail"/>
</action>
<kill name="fail">
<message>Sqoop failed, error message[${wf:errorMessage(wf:lastErrorNode())}]</message>
</kill>
<end name="end"/>
I was expecting that the job will run without any errors. But the job got killed and it gave the following error.
UnsupportedOperationException: Accessing local file system is not allowed.
I don't understand where I am wrong and why it is not allowing to complete the job?
Can Anyone help me to solve the issue.

Answer 1

Oozie sharelib (with the Sqoop action's dependencies) is stored on HDFS, and the server needs to know how to communicate with the Hadoop cluster. Access to the sharelib stored on a local filesystem is not allowed, see CVE-2017-15712.
Please review conf/hadoop-conf/core-site.xml, and make sure it does not use the local filesystem. For example, if your HDFS namenode listens on port 9000 on localhost, configure fs.defaultFS accordingly.
<property>
<name>fs.defaultFS</name>
<value>hdfs://localhost:9000</value>
</property>
...
</configuration>
Alternatively, you can remove the RawLocalFileSystem class (dummy implementation) and restart the server, but it isn't recommended (i.e. server becomes vulnerable to CVE-2017-15712).
Hope this helps. Also see this answer.