Can ClickHouse Kafka Engine consume compressed JSON messages?











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Can ClickHouse Kafka Engine consume compressed JSON messages from a Kafka topic, using JSONEachRow format?



Will it automatically decompress messages and then apply the JSON parsing?
Does it need any special configuration for it?






json apache-kafka clickhouse







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    up vote
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    down vote

    favorite












    Can ClickHouse Kafka Engine consume compressed JSON messages from a Kafka topic, using JSONEachRow format?



    Will it automatically decompress messages and then apply the JSON parsing?
    Does it need any special configuration for it?






    json apache-kafka clickhouse







    share|improve this question


























      up vote
      0
      down vote

      favorite









      up vote
      0
      down vote

      favorite











      Can ClickHouse Kafka Engine consume compressed JSON messages from a Kafka topic, using JSONEachRow format?



      Will it automatically decompress messages and then apply the JSON parsing?
      Does it need any special configuration for it?






      json apache-kafka clickhouse







      share|improve this question















      Can ClickHouse Kafka Engine consume compressed JSON messages from a Kafka topic, using JSONEachRow format?



      Will it automatically decompress messages and then apply the JSON parsing?
      Does it need any special configuration for it?






      json apache-kafka clickhouse




      json apache-kafka clickhouse






      share|improve this question















      share|improve this question













      share|improve this question




      share|improve this question








      edited Nov 22 at 17:45









      cricket_007

      78k1142108




      78k1142108










      asked Nov 22 at 12:53









      xmar

      339113




      339113
























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          Kafka Engine consumes messages as they are - no more, no less. It's almost the same as reading from native files, with the exception that message boundaries might need special treatments. ClickHouse doesn't support reading compressed data files other than native serialized blocks. So the answer is no, it cannot consume compressed JSON messages.






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            1 Answer
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            1 Answer
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            Kafka Engine consumes messages as they are - no more, no less. It's almost the same as reading from native files, with the exception that message boundaries might need special treatments. ClickHouse doesn't support reading compressed data files other than native serialized blocks. So the answer is no, it cannot consume compressed JSON messages.






            share|improve this answer



























              up vote
              1
              down vote













              Kafka Engine consumes messages as they are - no more, no less. It's almost the same as reading from native files, with the exception that message boundaries might need special treatments. ClickHouse doesn't support reading compressed data files other than native serialized blocks. So the answer is no, it cannot consume compressed JSON messages.






              share|improve this answer

























                up vote
                1
                down vote










                up vote
                1
                down vote









                Kafka Engine consumes messages as they are - no more, no less. It's almost the same as reading from native files, with the exception that message boundaries might need special treatments. ClickHouse doesn't support reading compressed data files other than native serialized blocks. So the answer is no, it cannot consume compressed JSON messages.






                share|improve this answer














                Kafka Engine consumes messages as they are - no more, no less. It's almost the same as reading from native files, with the exception that message boundaries might need special treatments. ClickHouse doesn't support reading compressed data files other than native serialized blocks. So the answer is no, it cannot consume compressed JSON messages.







                share|improve this answer














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                edited 9 hours ago

























                answered Nov 23 at 13:49









                Amos

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