Alima777 opened a new pull request #1399: URL: https://github.com/apache/incubator-iotdb/pull/1399
This PR provides the performance tracing function by **adding a performance log** and gives a switch statement "**Tracing on/off**" to control whether to print this log, which is off by default. The log records including: 1. the query sql, and the start time of this query 3. the number of series paths 4. the number of distinct tsfiles, including sequence and unsequence 5. the number of chunks, and average size of each chunk. This pr concentrates on raw data query, it may modify something for aggregation query and group by query later. ---------------------------------------------------------------- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: us...@infra.apache.org
