GBL-20935

Added comment to README about timeout

README.md

@@ -81,12 +81,21 @@ fork per CPU core and reuse threads would look like:
         <artifactId>maven-surefire-plugin</artifactId>
         <version>2.17</version>
         <configuration>
+            <systemPropertyVariables>
+                <disableTimeout>false</disableTimeout>
+                <timeoutSeconds>30</timeoutSeconds>
+                <timeoutRetries>2</timeoutRetries>
+            </systemPropertyVariables>
             <forkCount>1C</forkCount>
             <reuseForks>true</reuseForks>
             <argLine>-Xmx2048m -XX:MaxPermSize=512m</argLine>
         </configuration>
     </plugin>
 
+Timeout - By default, HiveRunner will timeout a test after 30s and retry that test two times. This is to cover for the bug
+https://issues.apache.org/jira/browse/TEZ-2475 that at times causes test cases to not terminate due to a lost DAG reference.
+The timeout may be configured with 'timeoutSeconds' and 'timeoutRetries'. Timouts may be disabled with 'disableTimeout'
+
 
 2. Look at the examples
 ----------