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https://issues.apache.org/jira/browse/FLINK-8162?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16301479#comment-16301479
]
ASF GitHub Bot commented on FLINK-8162:
---------------------------------------
Github user casidiablo commented on a diff in the pull request:
https://github.com/apache/flink/pull/5182#discussion_r158496021
--- Diff:
flink-connectors/flink-connector-kinesis/src/main/java/org/apache/flink/streaming/connectors/kinesis/internals/ShardConsumer.java
---
@@ -70,35 +71,45 @@
private Date initTimestamp;
+ private long millisBehindLatest;
+
/**
* Creates a shard consumer.
*
* @param fetcherRef reference to the owning fetcher
* @param subscribedShardStateIndex the state index of the shard this
consumer is subscribed to
* @param subscribedShard the shard this consumer is subscribed to
* @param lastSequenceNum the sequence number in the shard to start
consuming
+ * @param kinesisMetricGroup the metric group to report to
*/
public ShardConsumer(KinesisDataFetcher<T> fetcherRef,
Integer
subscribedShardStateIndex,
StreamShardHandle
subscribedShard,
- SequenceNumber lastSequenceNum)
{
+ SequenceNumber lastSequenceNum,
+ MetricGroup kinesisMetricGroup)
{
this(fetcherRef,
subscribedShardStateIndex,
subscribedShard,
lastSequenceNum,
-
KinesisProxy.create(fetcherRef.getConsumerConfiguration()));
+
KinesisProxy.create(fetcherRef.getConsumerConfiguration()),
+ kinesisMetricGroup);
}
/** This constructor is exposed for testing purposes. */
protected ShardConsumer(KinesisDataFetcher<T> fetcherRef,
Integer
subscribedShardStateIndex,
StreamShardHandle
subscribedShard,
SequenceNumber
lastSequenceNum,
- KinesisProxyInterface
kinesis) {
+ KinesisProxyInterface
kinesis,
+ MetricGroup
kinesisMetricGroup) {
this.fetcherRef = checkNotNull(fetcherRef);
this.subscribedShardStateIndex =
checkNotNull(subscribedShardStateIndex);
this.subscribedShard = checkNotNull(subscribedShard);
this.lastSequenceNum = checkNotNull(lastSequenceNum);
+
+ checkNotNull(kinesisMetricGroup)
+ .gauge("millisBehindLatest", () -> millisBehindLatest);
--- End diff --
Will this work? Am I allowed to use lambdas? What Java version has to be
supported?
> Kinesis Connector to report millisBehindLatest metric
> -----------------------------------------------------
>
> Key: FLINK-8162
> URL: https://issues.apache.org/jira/browse/FLINK-8162
> Project: Flink
> Issue Type: Improvement
> Components: Kinesis Connector
> Reporter: Cristian
> Priority: Minor
> Labels: kinesis
> Fix For: 1.5.0
>
> Original Estimate: 24h
> Remaining Estimate: 24h
>
> When reading from Kinesis streams, one of the most valuable metrics is
> "MillisBehindLatest" (see
> https://github.com/aws/aws-sdk-java/blob/25f0821f69bf94ec456f602f2b83ea2b0ca15643/aws-java-sdk-kinesis/src/main/java/com/amazonaws/services/kinesis/model/GetRecordsResult.java#L187-L201).
> Flink should use its metrics mechanism to report this value as a gauge,
> tagging it with the shard id.
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