# Debezium mysql Connector conversion error

**URL:** <https://forum.confluent.io/t/debezium-mysql-connector-conversion-error/2806>\
**Category:** Kafka Connect\
**Created:** [17 September 2021 06:36 UTC](https://forum.confluent.io/t/debezium-mysql-connector-conversion-error/2806 "2021-09-17T06:36:52Z")\
**Posts on this page:** 2\
**Page:** 1

<div class="post-metadata">

**Author:** ![srihari\_kusumanchi](https://avatars.discourse-cdn.com/v4/letter/s/e19b73/32.png) [@srihari\_kusumanchi](https://forum.confluent.io/u/srihari_kusumanchi)\
**Post date:** [17 September 2021 06:36 UTC](https://forum.confluent.io/t/debezium-mysql-connector-conversion-error/2806/1 "2021-09-17T06:36:52Z")

</div>

we are facing the below conversion error when we are trying to pull data from mysql table to kafka topic using debezium connector.

```auto
2021-09-08 06:52:17,032 WARN Invalid value '0000-00-00 00:00:00' stored in column 'date_entered' of table 'TabName' converted to empty value (io.debezium.connector.mysql.MySqlValueConverters) [debezium-mysqlconnector-ola_load-change-event-source-coordinator]
2021-09-08 06:52:17,033 ERROR Failed to properly convert key value for 'blackbox_prod.ola_bookings.date_entered' of type DATETIME for row [2160507548, [98, 97, 99, 99, 55, 55, 101, 52, 45, 57, 48, 48, 100, 45, 52, 56, 100, 97, 45, 57, 97, 98, 102, 45, 97, 50, 56, 101, 56, 48, 99, 98, 51, 101, 53, 101], null, null, null, null, null, null, 0, null, null, null, null, null, null, null, null, null, [111, 110, 116, 105, 109, 101], null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, 0.000000, null, null, null, null, [105, 110, 100, 105, 97], [109, 117, 109, 98, 97, 105], null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, 0.000000, null, null, null, null, null, [99, 97, 115, 104], null, null, 0, null, 2020-03-19 11:46:56.0, null, null, 0, null, 0, 0, null, 1, null, null, null, null, null, null, 1, null, 0.0, null, [97, 108, 108], null]: (io.debezium.relational.TableSchemaBuilder) [debezium-mysqlconnector-ola_load-change-event-source-coordinator]
org.apache.kafka.connect.errors.DataException: Invalid Java object for schema type STRING: class java.lang.Long for field: "date_entered"
	at org.apache.kafka.connect.data.ConnectSchema.validateValue(ConnectSchema.java:241)
	at org.apache.kafka.connect.data.Struct.put(Struct.java:216)
	at io.debezium.relational.TableSchemaBuilder.lambda$createKeyGenerator$3(TableSchemaBuilder.java:193)
	at io.debezium.relational.TableSchema.keyFromColumnData(TableSchema.java:130)
	at io.debezium.relational.RelationalChangeRecordEmitter.emitReadRecord(RelationalChangeRecordEmitter.java:84)
	at io.debezium.relational.RelationalChangeRecordEmitter.emitChangeRecords(RelationalChangeRecordEmitter.java:48)
	at io.debezium.pipeline.EventDispatcher.dispatchSnapshotEvent(EventDispatcher.java:155)
	at io.debezium.relational.RelationalSnapshotChangeEventSource.createDataEventsForTable(RelationalSnapshotChangeEventSource.java:377)
	at io.debezium.relational.RelationalSnapshotChangeEventSource.createDataEvents(RelationalSnapshotChangeEventSource.java:305)
	at io.debezium.relational.RelationalSnapshotChangeEventSource.doExecute(RelationalSnapshotChangeEventSource.java:138)
	at io.debezium.pipeline.source.AbstractSnapshotChangeEventSource.execute(AbstractSnapshotChangeEventSource.java:71)
	at io.debezium.pipeline.ChangeEventSourceCoordinator.lambda$start$0(ChangeEventSourceCoordinator.java:110)
	at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:515)
	at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
	at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
	at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
	at java.base/java.lang.Thread.run(Thread.java:829)

```

and the second issue was after failing at this point debezium connector not getting stopped ,instead it’s t write data again and again into kafka topic from starting of the table.

Please help in fixing this issue.

---

<div class="post-metadata">

**Author:** ![system](https://us1.discourse-cdn.com/flex019/uploads/confluentcommunity/original/1X/c49438c90c9df282e9996fdf6971be890c71b65a.svg) [@system](https://forum.confluent.io/u/system)\
**Post date:** [17 October 2021 06:37 UTC](https://forum.confluent.io/t/debezium-mysql-connector-conversion-error/2806/2 "2021-10-17T06:37:29Z")

</div>

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