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https://issues.apache.org/jira/browse/BEAM-8382?focusedWorklogId=338863&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-338863
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ASF GitHub Bot logged work on BEAM-8382:
----------------------------------------
Author: ASF GitHub Bot
Created on: 05/Nov/19 16:50
Start Date: 05/Nov/19 16:50
Worklog Time Spent: 10m
Work Description: lukecwik commented on pull request #9765:
[WIP][BEAM-8382] Add rate limit policy to KinesisIO.Read
URL: https://github.com/apache/beam/pull/9765#discussion_r342674503
##########
File path:
sdks/java/io/kinesis/src/main/java/org/apache/beam/sdk/io/kinesis/KinesisIO.java
##########
@@ -420,6 +426,47 @@ public Read
withCustomWatermarkPolicy(WatermarkPolicyFactory watermarkPolicyFact
return
toBuilder().setWatermarkPolicyFactory(watermarkPolicyFactory).build();
}
+ /**
+ * Specifies the rate limit policy as BackoffRateLimiter.
+ *
+ * @param fluentBackoff The {@code FluentBackoff} used to create the
backoff policy.
+ */
+ public Read withBackoffRateLimitPolicy(FluentBackoff fluentBackoff) {
Review comment:
Other IOs seem to take the configuration parameters explicitly and use
FluentBackoff internally like
[ClickhouseIO](https://github.com/apache/beam/blob/c2f0d282337f3ae0196a7717712396a5a41fdde1/sdks/java/io/clickhouse/src/main/java/org/apache/beam/sdk/io/clickhouse/ClickHouseIO.java#L257)
and
[SnsIO](https://github.com/apache/beam/blob/c2f0d282337f3ae0196a7717712396a5a41fdde1/sdks/java/io/amazon-web-services/src/main/java/org/apache/beam/sdk/io/aws/sns/SnsIO.java#L100)
instead of exposing a wrapped object of FluentBackoff directly.
Updating
[package-info.java](https://github.com/apache/beam/blob/master/sdks/java/core/src/main/java/org/apache/beam/sdk/util/package-info.java)
to be clearer about this directory being an internal implementation detail
makes sense.
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Issue Time Tracking
-------------------
Worklog Id: (was: 338863)
Time Spent: 6h 50m (was: 6h 40m)
> Add polling interval to KinesisIO.Read
> --------------------------------------
>
> Key: BEAM-8382
> URL: https://issues.apache.org/jira/browse/BEAM-8382
> Project: Beam
> Issue Type: Improvement
> Components: io-java-kinesis
> Affects Versions: 2.13.0, 2.14.0, 2.15.0
> Reporter: Jonothan Farr
> Assignee: Jonothan Farr
> Priority: Major
> Time Spent: 6h 50m
> Remaining Estimate: 0h
>
> With the current implementation we are observing Kinesis throttling due to
> ReadProvisionedThroughputExceeded on the order of hundreds of times per
> second, regardless of the actual Kinesis throughput. This is because the
> ShardReadersPool readLoop() method is polling getRecords() as fast as
> possible.
> From the KDS documentation:
> {quote}Each shard can support up to five read transactions per second.
> {quote}
> and
> {quote}For best results, sleep for at least 1 second (1,000 milliseconds)
> between calls to getRecords to avoid exceeding the limit on getRecords
> frequency.
> {quote}
> [https://docs.aws.amazon.com/streams/latest/dev/service-sizes-and-limits.html]
> [https://docs.aws.amazon.com/streams/latest/dev/developing-consumers-with-sdk.html]
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