kkhatua opened a new pull request #1572: DRILL-6879: Show warnings for potential performance issues URL: https://github.com/apache/drill/pull/1572 1. Introduced warning for non-progressive fragments. Based on a threshold (`drill.exec.http.profile.warning.progress.threshold`), if all fragments have not made progress within that time, a warning is issued. The default is 5 minutes (300sec) 2. Introduced a warning if any of the buffered operators spill to disk. 3. Introduced a warning for operators where the longest running fragment runs beyond a minimum threshold (`drill.exec.http.profile.warning.time.skew.min`), and runs atleast 2 times longer than the average (`drill.exec.http.profile.warning.time.skew.ratio.process`). The _clock_ symbol with a tooltip indicates the extent of the skew. A similar comparison is made for the wait time of a fragment, but with a max wait time exceeding the average by a separate ratio (`drill.exec.http.profile.warning.time.skew.ratio.wait`) 4. Introduced a warning for operators where the average wait time of a scan operator exceeds its processing time, for a minimum threshold (`drill.exec.http.profile.warning.scan.wait.min`). The _turtle_ symbol with a tooltip indicates which scan operator spent more time waiting than processing. 5. `TableBuilder` class refactored a. Using attribute map instead of String arguments, eg. for 'title' b. Removed APIs that pass a hyperlink since that is never used.
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