我正在尝试测试和评估数据库关闭时Kafka JDBC Sink连接器的行为。
当数据库关闭时在Kafka中收到新消息时，会报告以下错误：
INFO Unable to connect to database on attempt 1/3. Will retry in 10000 ms. (io.confluent.connect.jdbc.util.CachedConnectionProvider:91)
com.microsoft.sqlserver.jdbc.SQLServerException: Unable to access availability database 'Giorgos' because the database replica is not in the PRIMARY or SECONDARY role. Connections to an availability database is permitted only when the database replica is in the PRIMARY or SECONDARY role. Try the operation again later.
在重试之后，将报告以下错误并且任务将被终止：
ERROR WorkerSinkTask{id=sink-giorgos_test-2} Task is being killed and will not recover until manually restarted (org.apache.kafka.connect.runtime.WorkerTask:173)
在哪里可以修改退出次数和根据第一个错误设置为10000 ms的重试间隔？
说我希望工人继续尝试连接数据库5分钟。我应该配置哪些参数？
编辑以包含所需文件：
sink-file.properties
name=sink-test
connector.class=io.confluent.connect.jdbc.JdbcSinkConnector
tasks.max=1
topics=GIORGOS.TOPIC
connection.url=jdbc:sqlserver://ip:port;DatabaseName=Streaming;user=myuser;password=mypass
auto.create=true
# DB failover
max.retries=10
retry.backoff.ms=10000
pk.mode=record_value
pk.fields=ID
insert.mode=upsert
transforms=ExtractField
transforms.ExtractField.type=org.apache.kafka.connect.transforms.ExtractField$Value
transforms.ExtractField.field=data
worker.properties（我在分布式模式下运行时有多个文件）
bootstrap.servers=localhost:9092
group.id=connect-cluster
key.converter=org.apache.kafka.connect.storage.StringConverter
key.converter.schema.registry.url=http://localhost:8081
value.converter=io.confluent.connect.avro.AvroConverter
value.converter.schema.registry.url=http://localhost:8081
config.storage.topic=connect-configs
offset.storage.topic=connect-offsets
status.storage.topic=connect-statuses
config.storage.replication.factor=1
offset.storage.replication.factor=1
status.storage.replication.factor=1
internal.key.converter=org.apache.kafka.connect.json.JsonConverter
internal.value.converter=org.apache.kafka.connect.json.JsonConverter
internal.key.converter.schemas.enable=false
internal.value.converter.schemas.enable=false
rest.port=8040
rest.advertised.port=8040
plugin.path=/usr/share/java
答案 0 :(得分：0)
在此解释：https://docs.confluent.io/current/connect/connect-jdbc/docs/sink_config_options.html#retries
您可以在连接器配置中配置2个属性：
max.retries=30
retry.backoff.ms=10000
在这里，它将重试30次，每次尝试之间等待10秒（= 300秒= 5分钟）
答案 1 :(得分：0)
JDBC接收器连接与源连接器共享相同的参数。 以下是用于尝试连接的方法
connection.attempts
Maximum number of attempts to retrieve a valid JDBC connection.
Type: int
Default: 3
Importance: low
connection.backoff.ms
Backoff time in milliseconds between connection attempts.
Type: long
Default: 10000
Importance: low