Sanity checking tool for CDAP

We need to have a tool that can be run when apps running in CDAP are not behaving as expected. The tool can do basic trouble-shooting checks that we manually end up doing. Such a tool will be greatly useful when we get support calls.

Some of the checks that can be done -

• Is the underlying system functioning correctly?

  • Check HDFS for disk space, bad blocks, etc.

  • Check HBase for bad regions, etc.

  • Check if YARN is running fine.

• Is CDAP functioning correctly?

  • Are all components of CDAP up, discoverable?

  • Run simple commands on each component and make sure it is behaving correctly. Like, start and commit a transaction, write data into a dataset, etc.