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apache-iotdb

What does the queryId and Id variable means in PlanFragmentId of Apache IoTDB and what format should they be?

I am now learning the configuration logic of PlanFragmentId in Apache IoTDB, and I noticed that there are two construction variables for PlanFragmentId, queryId and Id. Since these both seems to represent id information, I wonder what's the difference of the meaning of these two parameters? And also, what should the format of these two parameters should be?

I checked the official user cases, and when I try to set queryId to number set, seems like the error mentioned this setting is wrong.

Solution

  • queryId in Apache IoTDB represents the id of the query to which the query fragment belongs. Id represents the id of this fragment in the query. The format of queryId should be yyyyMMdd_HHmmss_index_dataNodeId, while the value of Id should be an increasing integer value.