[HCATALOG-389] hcat_ping (script to check if HCatalog server is running/reachable)

• Type: New Feature
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 0.4.1
• Fix Version/s: 0.5, 0.4.1
• Component/s: client
• Assignee: Mithun Radhakrishnan
• Reporter: Mithun Radhakrishnan
• Created: 25/Apr/12 18:57
• Updated: 15/Feb/13 21:32
• Resolved: 26/Jun/12 21:52

Description

It would be nice to have a script that checks if hcat_server is running, whether it's reachable and if it's "healthy". The current definition of "healthy" implies:
1. HCatalog responds to requests to list tables/databases.
2. Tables can be created/dropped in HCatalog.
3. When managed tables are used, table-directories are created/deleted on the DFS.
4. (Future ActiveMQ events are being posted correctly, when tables/partitions are created/dropped.

Monitoring apps might use this script to detect when HCatalog is down.

I'll post a trivial script that does 1-3, shortly.