|Modifier and Type||Class and Description|
Builder for configuring a CDC source that streams change data from a PostgreSQL database to Hazelcast Jet.
|Modifier and Type||Method and Description|
Creates a CDC source that streams change data from a PostgreSQL database to Hazelcast Jet.
@Nonnull public static PostgresCdcSources.Builder postgres(@Nonnull String name)
You can configure how the source will behave if the database connection
breaks, by passing one of the retry strategies
The default reconnect behavior is never, which treats any connection failure as an unrecoverable problem and triggers the failure of the source and the entire job.
Other behavior options, which specify that retry attempts should be made, will result in the source initiating reconnects to the database.
There is a further setting influencing reconnect behavior, specified via
setShouldStateBeResetOnReconnect(). The boolean flag passed in
specifies what should happen to the connector's state on reconnect,
whether it should be kept or reset. If the state is kept, then
database snapshotting should not be repeated and streaming the WAL should
resume at the position where it left off. If the state is reset, then the
source will behave as on its initial start, so will do a database
snapshot and will start tailing the WAL where it syncs with the database
You can also configure how often the source will send feedback about
processed change record offsets to the backing database via
setCommitPeriod(). The replication slots of the database will
clean up their internal data structures based on this feedback. A commit
0 means that the source will commit offsets after every
batch of change records. Also, important to note that periodic commits
happen only in the case of jobs without processing guarantees. For jobs
offering processing guarantees, the source will ignore this setting and
commit offsets as part of the state snapshotting process. So the setting
governing them will be
name- name of this source, needs to be unique, will be passed to the underlying Kafka Connect source
Copyright © 2022 Hazelcast, Inc.. All rights reserved.