我想对一个主题应用一组smt（单消息转换）。
我有以下配置。。

connector.class: io.debezium.connector.postgresql.PostgresConnector
name: test
database.server.name: testserver
database.hostname: 127.0.0.1
database.port: 5432
database.dbname: test
database.user: testuser
database.password: "testpass"
schema.whitelist: test

table.whitelist: test.topic1, test.topic2, test.topic3

transforms:unwrap,extractTopic1Key,extractTopic1Value,extractTopic2Key

transforms.unwrap.type: io.debezium.transforms.UnwrapFromEnvelope
transforms.unwrap.delete.handling.mode: rewrite
transforms.unwrap.drop.tombstones: false

transforms.extractTopic1Key.type: org.apache.kafka.connect.transforms.ExtractField$Key
transforms.extractTopic1Value.type: org.apache.kafka.connect.transforms.ExtractField$Value

transforms.extractTopic1Key.field: propname
transforms.extractTopic1Value.field: propvalue

transforms.extractTopic1Key.predicate: test_topic1
transforms.extractTopic1Value.predicate: test_topic1

transforms.extractTopic2Key.type:org.apache.kafka.connect.transforms.ExtractField$Key
transforms.extractTopic2Key.field: id
transforms.extractTopic2Key.predicate: test_topic2

predicates=test_topic1,test_topic2
predicates.test_topic1.type=org.apache.kafka.connect.predicates.TopicNameMatches
predicates.test_topic1.pattern=.*topic1

predicates.test_topic2.type=org.apache.kafka.connect.predicates.TopicNameMatches
predicates.test_topic2.pattern=.*topic2

key.converter: org.apache.kafka.connect.json.JsonConverter
key.converter.schemas.enable: false
value.converter: org.apache.kafka.connect.json.JsonConverter
value.converter.schemas.enable: false
decimal.handling.mode: string
include.schema.changes: false

# Adds header which says insert,update,delete

transforms.unwrap.operation.header: true
snapshot.mode: initial
heartbeat.interval.ms: 10000
slot.name: test

我得到以下错误。。

org.apache.kafka.connect.errors.ConnectException: Tolerance exceeded in error handler
        at org.apache.kafka.connect.runtime.errors.RetryWithToleranceOperator.execAndHandleError(RetryWithToleranceOperator.java:178)
        at org.apache.kafka.connect.runtime.errors.RetryWithToleranceOperator.execute(RetryWithToleranceOperator.java:104)
        at org.apache.kafka.connect.runtime.TransformationChain.apply(TransformationChain.java:50)
        at org.apache.kafka.connect.runtime.WorkerSourceTask.sendRecords(WorkerSourceTask.java:308)
        at org.apache.kafka.connect.runtime.WorkerSourceTask.execute(WorkerSourceTask.java:234)
        at org.apache.kafka.connect.runtime.WorkerTask.doRun(WorkerTask.java:177)
        at org.apache.kafka.connect.runtime.WorkerTask.run(WorkerTask.java:227)
        at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
        at java.util.concurrent.FutureTask.run(FutureTask.java:266)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
        at java.lang.Thread.run(Thread.java:748)
Caused by: java.lang.NullPointerException
        at org.apache.kafka.connect.transforms.ExtractField.apply(ExtractField.java:61)
        at org.apache.kafka.connect.runtime.TransformationChain.lambda$apply$0(TransformationChain.java:50)
        at org.apache.kafka.connect.runtime.errors.RetryWithToleranceOperator.execAndRetry(RetryWithToleranceOperator.java:128)
        at org.apache.kafka.connect.runtime.errors.RetryWithToleranceOperator.execAndHandleError(RetryWithToleranceOperator.java:162)
        ... 11 more

当我移除除 unwrap ，工作正常。我的示例主题数据如下所示。
钥匙

{"propname":"my.test.prop"}

价值

{"propname":"my.test.prop","propvalue":"10","__deleted":"false"}
``` `propname` 是表中的主键。
上面的配置有什么问题？我们如何将特定的SMT仅应用于特定的主题？
p、 s:我使用的是汇合平台5.3.1