[KNOX-163] job submission through knox-webchat results in NullPointerException

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 0.3.0
• Fix Version/s: 0.3.0
• Assignee: Dilli Arumugam
• Reporter: Dilli Arumugam
• Created: 26/Sep/13 05:41
• Updated: 28/Mar/19 14:13
• Resolved: 27/Sep/13 18:02

Description

Hitting a NullPointerException while trying to submit a job through knox -> webhcat.
The same use case works when there is no knox in path.

Curl session:
curl -k -i -u guest:guest-password -X POST \
-d jar=/user/guest/tmp/test/lib/wordcount.jar -d class=WordCountTem\
-d arg=/user/guest/tmp/test/input -d arg=/user/guest/tmp/test/output \
https://localhost:8443/gateway/sandbox/templeton/v1/mapreduce/jar

Pasting what I think is relevant from the stack trace on shown on console:

<h3>Caused by:</h3><pre>java.lang.NullPointerException
at org.apache.hadoop.gateway.dispatch.HttpClientDispatch.executeRequest(HttpClientDispatch.java:83)
at org.apache.hadoop.gateway.dispatch.HttpClientDispatch.doPost(HttpClientDispatch.java:262)
at org.apache.hadoop.gateway.dispatch.AbstractGatewayDispatch$PostAdapter.doMethod(AbstractGatewayDispatch.java:141)
at org.apache.hadoop.gateway.dispatch.AbstractGatewayDispatch.doFilter(AbstractGatewayDispatch.java:64)
at org.apache.hadoop.gateway.filter.AbstractGatewayFilter.doFilter(AbstractGatewayFilter.java:59)
at org.apache.hadoop.gateway.GatewayFilter$Holder.doFilter(GatewayFilter.java:259)

It appears that query string happens to be null.
The query string is not expected to be null here.

Would try to debug tomorrow.

Issue Links

• relates to: KNOX-18 IdentityAssertionHttpServletRequestWrapper should only be used when required by the service