[HBASE-13106] Ensure endpoint-only table coprocessors can be dynamically loaded

• Type: Test
• Status: Closed
• Priority: Trivial
• Resolution: Fixed
• Fix Version/s: 1.0.1, 1.1.0, 0.98.11, 2.0.0
• Hadoop Flags: Reviewed
• Assignee: Andrew Kyle Purtell
• Reporter: Andrew Kyle Purtell
• Created: 26/Feb/15 00:03
• Updated: 28/Apr/15 19:18
• Resolved: 26/Feb/15 02:46

Description

I came across the blog post http://www.3pillarglobal.com/insights/hbase-coprocessors and this interesting bit:

This means that you can load both Observer and Endpoint Coprocessor statically using the following Method of HTableDescriptor:

addCoprocessor(String className, org.apache.hadoop.fs.Path jarFilePath, int priority, Map<String,String> kvs) throws IOException

In my case, the above method worked fine for Observer Coprocessor but didn’t work for Endpoint Coprocessor, causing the table to become unavailable and finally I had to restart my HBase. The same Endpoint Coprocessor worked fine when loaded statically. Use the above method for Endpoint Coprocessor with caution.

To check this I wrote a test, attached. It passes, all seems ok. Guessing the complaint was due to user error, probably jar placement/path issues.

Let's still commit the test.