Apache Pinot

By running travis_quickstart.sh, I was able to reproduce this once in one of my initial runs, and have not been able to repro after that.

the latest travis run seems to have passed

I think we can change the script for it to be less brittle

```  if [ "${COUNT_STAR_RES}" -gt 0 ]; then
    if [ "${RES_1}" -eq 0 ]; then
      RES_1=${COUNT_STAR_RES}
      continue
    fi
    if [ "${COUNT_STAR_RES}" -gt "${RES_1}" ]; then
      PASS=1
      break
    fi
  fi```

We need to protect against case where COUNT_STAR_RES = ''

The above code is run in a loop with sleep 1 anyways, so subsequent call should pass

That’s what the log says, queries sent before table created, which causes script to fail 

Do we have native null support enabled now? If so, where can I find the documentation?

no, we just have support for creating null vector

There was a question around default null value choices, and it reminded me of the null vector PR, so was asking for status.

we need to handle the x != NULL in filter (this is easy)

Another reminder on validating release-0.4.0-RC2