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  1. Debezium
  2. DBZ-5255

Debezium Postgres Connector Incorrectly ignoring LSNs and losing data

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Details

    • Bug
    • Resolution: Obsolete
    • Major
    • None
    • 1.5.2.Final
    • postgresql-connector
    • None
    • False
    • None
    • False

    Description

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      Bug report

      For bug reports, provide this information, please:

      What Debezium connector do you use and what version?

      1.5.2.Final

      What is the connector configuration?

      {
                      "binary.handling.mode": "base64",
                      "connector.class": "io.debezium.connector.postgresql.PostgresConnector",
                      "database.dbname": "foo_prod",
                      "database.hostname": "foo-db.example.com",
                      "database.password": "${file:/etc/kafka/secrets/connect.properties:PG_PASSWORD}",
                      "database.port": "5432",
                      "database.server.name": "foo_prod",
                      "database.user": "${file:/etc/kafka/secrets/connect.properties:PG_USERNAME}",
                      "datatype.propagate.source.type": ".+\\.numeric,.+\\.bytea",
                      "decimal.handling.mode": "string",
                      "heartbeat.action.query": "INSERT INTO logical_ticker.tick (tick_time) VALUES (now()) ON CONFLICT (db) DO UPDATE SET tick_time = now();",
                      "heartbeat.interval.ms": "10000",
                      "include.unknown.datatypes": "true",
                      "key.converter": "io.confluent.connect.avro.AvroConverter",
                      "key.converter.basic.auth.credentials.source": "USER_INFO",
                      "key.converter.basic.auth.user.info": "${file:/etc/kafka/secrets/connect.properties:SR_USERNAME}:${file:/etc/kafka/secrets/connect.properties:SR_PASSWORD}",
                      "key.converter.schema.registry.url": "https://cluster.region.aws.confluent.cloud",
                      "name": "foo_prod:debezium_postgres",
                      "plugin.name": "pgoutput",
                      "snapshot.mode": "exported",
                      "table.include.list": ".....",
                      "tasks.max": "1",
                      "toasted.value.placeholder": "__debezium_unchanged_toast_value",
                      "value.converter": "io.confluent.connect.avro.AvroConverter",
                      "value.converter.basic.auth.credentials.source": "USER_INFO",
                      "value.converter.basic.auth.user.info": "${file:/etc/kafka/secrets/connect.properties:SR_USERNAME}:${file:/etc/kafka/secrets/connect.properties:SR_PASSWORD}",
                      "value.converter.schema.registry.url": "https://cluster.region.aws.confluent.cloud"
      } 

      What is the captured database version and mode of depoyment?

      Vanilla postgres 11.15 on-prem.

      What behaviour do you expect?

      Data published to Kafka continuously from publisher

      What behaviour do you see?

      A large gap of data missing after incident.

      Do you see the same behaviour using the latest relesead Debezium version?

      I haven't tried, but I cannot reproduce the issue and it's the first we have seen it in several years for any of our connectors.

      Do you have the connector logs, ideally from start till finish?

      Attached.  First file shows all logs of exception and connector restart, the second file shows the constant messages about LSNs being ignored that followed.

      How to reproduce the issue using our tutorial deployment?

      N/A

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              Unassigned Unassigned
              jfinzel Jeremy Finzel
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              Dates

                Created:
                Updated:
                Resolved: