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https://issues.apache.org/jira/browse/BEAM-8382?focusedWorklogId=338193&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-338193
]
ASF GitHub Bot logged work on BEAM-8382:
----------------------------------------
Author: ASF GitHub Bot
Created on: 04/Nov/19 16:45
Start Date: 04/Nov/19 16:45
Worklog Time Spent: 10m
Work Description: aromanenko-dev commented on pull request #9765:
[WIP][BEAM-8382] Add rate limit policy to KinesisIO.Read
URL: https://github.com/apache/beam/pull/9765#discussion_r342143825
##########
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) {
+ checkArgument(fluentBackoff != null, "fluentBackoff cannot be null");
+ return toBuilder()
+
.setRateLimitPolicyFactory(RateLimitPolicyFactory.withBackoff(fluentBackoff))
+ .build();
+ }
+
+ /**
+ * Specifies the rate limit policy as FixedDelayRateLimiter with the
default delay of 1 second.
+ */
+ public Read withFixedDelayRateLimitPolicy() {
+ return
toBuilder().setRateLimitPolicyFactory(RateLimitPolicyFactory.withFixedDelay()).build();
+ }
+
+ /**
+ * Specifies the rate limit policy as FixedDelayRateLimiter with the given
delay.
+ *
+ * @param delay Denotes the fixed delay duration.
+ */
+ public Read withFixedDelayRateLimitPolicy(Duration delay) {
Review comment:
Please, add an example into KinesisIO javadoc how to use it.
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Issue Time Tracking
-------------------
Worklog Id: (was: 338193)
Time Spent: 5h 50m (was: 5h 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: 5h 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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