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https://issues.apache.org/jira/browse/BEAM-8382?focusedWorklogId=338221&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-338221
]
ASF GitHub Bot logged work on BEAM-8382:
----------------------------------------
Author: ASF GitHub Bot
Created on: 04/Nov/19 17:13
Start Date: 04/Nov/19 17:13
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_r342166868
##########
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:
org.apache.beam.sdk.util.FluentBackoff is not meant to be on the public API
surface and is only meant for internal use. All classes within
org.apache.beam.sdk.util are like that.
If we would want to promote it to be public, we should find the appropriate
place for it and move it out of util.
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Issue Time Tracking
-------------------
Worklog Id: (was: 338221)
Time Spent: 6h 20m (was: 6h 10m)
> 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 20m
> 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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