Hi dev: Sometimes we need to delete some historical data from stream table to make the table size not too large, but currently the stream table can't support updating/deleting data, so we need to stop the app and use 'alter table COMPACT 'close_streaming' command to close stream table, and then delete data. According to discussion with Jacky and David offline, there are two solutions to resolve this without stopping app: 1. set all non-stream segments to 'carbon.input.segments.tablename' property to delete data except stream segment, this's easy to implement; 2. support deleting data for stream segment too, this's more complicated. I think we can implement with solution 1 first, and then consider the implementation of solution 2 in depth. Welcome to feedback, thanks.
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