[
https://issues.apache.org/jira/browse/FLINK-6053?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Bowen Li updated FLINK-6053:
----------------------------
Description:
Currently, Flink's Gauge is defined as
```java
/**
* A Gauge is a {@link Metric} that calculates a specific value at a point in
time.
*/
public interface Gauge<T> extends Metric {
T getValue();
}
```
But it doesn't make sense to have Gauge take generic types other than Number.
And it blocks I from finishing FLINK-6013, because I cannot assume Gauge is
only about Number. So the class should be like
```
/**
* A Gauge is a {@link Metric} that calculates a specific value at a point in
time.
*/
public interface Gauge<T extends Number> extends Metric {
T getValue();
}
```
was:
Currently, Flink's Gauge is defined as
```
/**
* A Gauge is a {@link Metric} that calculates a specific value at a point in
time.
*/
public interface Gauge<T> extends Metric {
T getValue();
}
```
But it doesn't make sense to have Gauge take generic types other than Number.
So the class should be like
```
/**
* A Gauge is a {@link Metric} that calculates a specific value at a point in
time.
*/
public interface Gauge<T extends Number> extends Metric {
T getValue();
}
```
> Gauge<T> should only take subclasses of Number, rather than everything
> ----------------------------------------------------------------------
>
> Key: FLINK-6053
> URL: https://issues.apache.org/jira/browse/FLINK-6053
> Project: Flink
> Issue Type: Improvement
> Components: Metrics
> Affects Versions: 1.2.0
> Reporter: Bowen Li
> Fix For: 1.3.0
>
>
> Currently, Flink's Gauge is defined as
> ```java
> /**
> * A Gauge is a {@link Metric} that calculates a specific value at a point in
> time.
> */
> public interface Gauge<T> extends Metric {
> T getValue();
> }
> ```
> But it doesn't make sense to have Gauge take generic types other than Number.
> And it blocks I from finishing FLINK-6013, because I cannot assume Gauge is
> only about Number. So the class should be like
> ```
> /**
> * A Gauge is a {@link Metric} that calculates a specific value at a point in
> time.
> */
> public interface Gauge<T extends Number> extends Metric {
> T getValue();
> }
> ```
--
This message was sent by Atlassian JIRA
(v6.3.15#6346)
