Apache kafka 在Kafka Connect中将long转换为int64

我正在尝试用Kafka Connect编写一个自定义的单消息转换。从int64/Date类型字段中，我生成了一个长值，但当我试图将该长值写回具有相同模式（int64类型）的updatedValue时，我遇到了一个问题：

错误是：

[2020-05-14 14:31:52,120] INFO WorkerSourceTask{id=datechanger} Committing offsets (org.apache.kafka.connect.runtime.WorkerSourceTask)
connect_1    | [2020-05-14 14:31:52,120] INFO WorkerSourceTask{id=datechanger-0} flushing 0 outstanding messages for offset commit (org.apache.kafka.connect.runtime.WorkerSourceTask)
connect_1    | [2020-05-14 14:31:52,120] ERROR WorkerSourceTask{id=datechanger-0} Task threw an uncaught and unrecoverable exception (org.apache.kafka.connect.runtime.WorkerTask)
connect_1    | org.apache.kafka.connect.errors.ConnectException: Tolerance exceeded in error handler
connect_1    |  at org.apache.kafka.connect.runtime.errors.RetryWithToleranceOperator.execAndHandleError(RetryWithToleranceOperator.java:178)
connect_1    |  at org.apache.kafka.connect.runtime.errors.RetryWithToleranceOperator.execute(RetryWithToleranceOperator.java:104)
connect_1    |  at org.apache.kafka.connect.runtime.TransformationChain.apply(TransformationChain.java:50)
connect_1    |  at org.apache.kafka.connect.runtime.WorkerSourceTask.sendRecords(WorkerSourceTask.java:320)
connect_1    |  at org.apache.kafka.connect.runtime.WorkerSourceTask.execute(WorkerSourceTask.java:245)
connect_1    |  at org.apache.kafka.connect.runtime.WorkerTask.doRun(WorkerTask.java:184)
connect_1    |  at org.apache.kafka.connect.runtime.WorkerTask.run(WorkerTask.java:234)
connect_1    |  at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
connect_1    |  at java.util.concurrent.FutureTask.run(FutureTask.java:266)
connect_1    |  at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
connect_1    |  at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
connect_1    |  at java.lang.Thread.run(Thread.java:748)
connect_1    | Caused by: org.apache.kafka.connect.errors.DataException: Invalid Java object for schema type INT64: class java.lang.Long for field: "date"

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是否有机会将该长值转换回int64，以使其符合模式

我也有同样的问题。我的问题是，我将kafka.connect.data包中的

Date.SCHEMA

指定为架构

这样，就不需要传递长值，只需传递java.util.Date本身即可。模式验证器将解决这个问题

我在这里通过挖掘资料发现了这一点-

这里的问题是，它在

SCHEMA\u-TYPE\u-CLASSES

之前找到

LOGICAL\u-TYPE\u-CLASSES

列表，因此试图将其视为日期。错误信息只是误导

[2020-05-14 14:31:52,120] INFO WorkerSourceTask{id=datechanger} Committing offsets (org.apache.kafka.connect.runtime.WorkerSourceTask)
connect_1    | [2020-05-14 14:31:52,120] INFO WorkerSourceTask{id=datechanger-0} flushing 0 outstanding messages for offset commit (org.apache.kafka.connect.runtime.WorkerSourceTask)
connect_1    | [2020-05-14 14:31:52,120] ERROR WorkerSourceTask{id=datechanger-0} Task threw an uncaught and unrecoverable exception (org.apache.kafka.connect.runtime.WorkerTask)
connect_1    | org.apache.kafka.connect.errors.ConnectException: Tolerance exceeded in error handler
connect_1    |  at org.apache.kafka.connect.runtime.errors.RetryWithToleranceOperator.execAndHandleError(RetryWithToleranceOperator.java:178)
connect_1    |  at org.apache.kafka.connect.runtime.errors.RetryWithToleranceOperator.execute(RetryWithToleranceOperator.java:104)
connect_1    |  at org.apache.kafka.connect.runtime.TransformationChain.apply(TransformationChain.java:50)
connect_1    |  at org.apache.kafka.connect.runtime.WorkerSourceTask.sendRecords(WorkerSourceTask.java:320)
connect_1    |  at org.apache.kafka.connect.runtime.WorkerSourceTask.execute(WorkerSourceTask.java:245)
connect_1    |  at org.apache.kafka.connect.runtime.WorkerTask.doRun(WorkerTask.java:184)
connect_1    |  at org.apache.kafka.connect.runtime.WorkerTask.run(WorkerTask.java:234)
connect_1    |  at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
connect_1    |  at java.util.concurrent.FutureTask.run(FutureTask.java:266)
connect_1    |  at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
connect_1    |  at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
connect_1    |  at java.lang.Thread.run(Thread.java:748)
connect_1    | Caused by: org.apache.kafka.connect.errors.DataException: Invalid Java object for schema type INT64: class java.lang.Long for field: "date"