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Bowen Li commented on FLINK-7223: --------------------------------- [~StephanEwen] We've already filed such a request to AWS through our company. Well, it's not easy and very practical to ask Amazon make such internal changes - I guess such changes will require AWS to re-design a lot of stuff. Just look at how slow they are responding to a simple KinesisProducer issues on https://github.com/awslabs/amazon-kinesis-producer/issues ....... > Increase DEFAULT_SHARD_DISCOVERY_INTERVAL_MILLIS for Flink-kinesis-connector > ---------------------------------------------------------------------------- > > Key: FLINK-7223 > URL: https://issues.apache.org/jira/browse/FLINK-7223 > Project: Flink > Issue Type: Improvement > Components: Kinesis Connector > Affects Versions: 1.3.0 > Reporter: Bowen Li > Assignee: Bowen Li > Priority: Minor > Fix For: 1.4.0 > > > Background: {{DEFAULT_SHARD_DISCOVERY_INTERVAL_MILLIS}} in > {{org.apache.flink.streaming.connectors.kinesis.config.ConsumerConfigConstants}} > is the default value for Flink to call Kinesis's {{describeStream()}} API. > Problem: Right now, its value is 10,000millis (10sec), which is too short. We > ran into problems that Flink-kinesis-connector's call of {{describeStream()}} > exceeds Kinesis rate limit, and broken Flink taskmanager. > According to > http://docs.aws.amazon.com/kinesis/latest/APIReference/API_DescribeStream.html, > > "This operation has a limit of 10 transactions per second per account.". What > it means is that the 10transaction/account is a limit on a single > organization's AWS account......:( We contacted AWS Support, and confirmed > this. If you have more applications (either other Flink apps or non-Flink > apps) competing aggressively with your Flink app on this API, your Flink app > breaks. > I propose increasing the value DEFAULT_SHARD_DISCOVERY_INTERVAL_MILLIS from > 10,000millis(10sec) to preferably 300,000 (5min). Or at least 60,000 (1min) > if anyone has a solid reason arguing that 5min is too long, > This is also related to https://issues.apache.org/jira/browse/FLINK-6365 -- This message was sent by Atlassian JIRA (v6.4.14#64029)