vinoyang commented on FLINK-7964:

[~twalthr] Agree Timo, I am processing Kafka 2.0 connector which tracked by 
issue FLINK-9697.

> Add Apache Kafka 1.0/1.1 connectors
> -----------------------------------
>                 Key: FLINK-7964
>                 URL: https://issues.apache.org/jira/browse/FLINK-7964
>             Project: Flink
>          Issue Type: Improvement
>          Components: Kafka Connector
>    Affects Versions: 1.4.0
>            Reporter: Hai Zhou
>            Assignee: Hai Zhou
>            Priority: Major
>             Fix For: 1.7.0
> Kafka 1.0.0 is no mere bump of the version number. The Apache Kafka Project 
> Management Committee has packed a number of valuable enhancements into the 
> release. Here is a summary of a few of them:
> * Since its introduction in version 0.10, the Streams API has become hugely 
> popular among Kafka users, including the likes of Pinterest, Rabobank, 
> Zalando, and The New York Times. In 1.0, the the API continues to evolve at a 
> healthy pace. To begin with, the builder API has been improved (KIP-120). A 
> new API has been added to expose the state of active tasks at runtime 
> (KIP-130). The new cogroup API makes it much easier to deal with partitioned 
> aggregates with fewer StateStores and fewer moving parts in your code 
> (KIP-150). Debuggability gets easier with enhancements to the print() and 
> writeAsText() methods (KIP-160). And if that’s not enough, check out KIP-138 
> and KIP-161 too. For more on streams, check out the Apache Kafka Streams 
> documentation, including some helpful new tutorial videos.
> * Operating Kafka at scale requires that the system remain observable, and to 
> make that easier, we’ve made a number of improvements to metrics. These are 
> too many to summarize without becoming tedious, but Connect metrics have been 
> significantly improved (KIP-196), a litany of new health check metrics are 
> now exposed (KIP-188), and we now have a global topic and partition count 
> (KIP-168). Check out KIP-164 and KIP-187 for even more.
> * We now support Java 9, leading, among other things, to significantly faster 
> TLS and CRC32C implementations. Over-the-wire encryption will be faster now, 
> which will keep Kafka fast and compute costs low when encryption is enabled.
> * In keeping with the security theme, KIP-152 cleans up the error handling on 
> Simple Authentication Security Layer (SASL) authentication attempts. 
> Previously, some authentication error conditions were indistinguishable from 
> broker failures and were not logged in a clear way. This is cleaner now.
> * Kafka can now tolerate disk failures better. Historically, JBOD storage 
> configurations have not been recommended, but the architecture has 
> nevertheless been tempting: after all, why not rely on Kafka’s own 
> replication mechanism to protect against storage failure rather than using 
> RAID? With KIP-112, Kafka now handles disk failure more gracefully. A single 
> disk failure in a JBOD broker will not bring the entire broker down; rather, 
> the broker will continue serving any log files that remain on functioning 
> disks.
> * Since release 0.11.0, the idempotent producer (which is the producer used 
> in the presence of a transaction, which of course is the producer we use for 
> exactly-once processing) required max.in.flight.requests.per.connection to be 
> equal to one. As anyone who has written or tested a wire protocol can attest, 
> this put an upper bound on throughput. Thanks to KAFKA-5949, this can now be 
> as large as five, relaxing the throughput constraint quite a bit.

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