Thank you for your answer! It was not tested by me, but probably there was problem with prioritizing, because it has to be set directly by hand. It is strange, because a queue should has FIFO prioritized by default, i think.
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Dear Community! I have a simple flow in Apache NiFi 1.20: 1. QueryDatabaseTableRecord -> 2. SplitAvro -> 3. ConvertAvroToJson -> 4. LogAttribute -> 5. PutDatabaseRecord Flow descrition: 1. Read records from a table order by "updated" column (a datetime with millisecs). 2. put each of records into single flowfile 3. Convert a record into JSON 4. Log JSON into log file. 5. insert a record to different database Each of processors have only 1 single concurrent thread on SETTING page! Everything works fine, except sometime the order of the records will be changed according to "updated" column. Could you please find me the cause? How can be ensured the order of records right?
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