Bug Fixes

• IOTDB-1303 Disable group by without aggregation function in select clause
• IOTDB-1306 Fix insertion blocked caused the deadlock in memory control module
• IOTDB-1308 Fix users with READ_TIMESERIES permission cannot execute group by fill queries
• IOTDB-1344 Fix cannot create timeseries caused by the timeseries count doesn't reset when deleting storage group
• IOTDB-1384 Some value will disappear while using group by query
• IOTDB-1398 Do not select unseq files when there are uncompacted old unseq files
• ISSUE-3316 Fix query result with the same time range is inconsistent in group by query
• Fix TotalSeriesNumber in MManager counted twice when recovering
• Fix unseq compaction throws a wrong exception if some paths are not in the file
• Fix overlapped data should be consumed first exception when query

Improvements

• [IOTDB-1356] Separate unseq_file_num_in_each_level from selecting candidate file in unseq compaction
• [IOTDB-1412] Unclear exception message thrown when executing empty InsertTabletPlan
• continuous compaction in level compaction strategy when no tsfile is to be closed

New Features

• support brackets with number in timeseries path