JDK-8201169 : Release Note: Readiness Information Previously Recorded in SelectionKey Ready Set Not Preserved
- Type: Sub-task
- Component: core-libs
- Sub-Component: java.nio
- Affected Version: 11
- Priority: P4
- Status: Closed
- Resolution: Delivered
- Submitted: 2018-04-05
- Updated: 2019-04-09
- Resolved: 2018-04-05
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Unresolved : Release in which this issue/RFE will be addressed.
Resolved: Release in which this issue/RFE has been resolved.
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Unresolved : Release in which this issue/RFE will be addressed.
Resolved: Release in which this issue/RFE has been resolved.
Fixed : Release in which this issue/RFE has been fixed. The release containing this fix may be available for download as an Early Access Release or a General Availability Release.
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| JDK 11 |
|---|
11Resolved  |
Description
The `java.nio.channels.Selector` API specifies precisely how selection operations add selection keys to the selector's selected-key set or update the readiness information of selection keys already in the set. The `Selector` implementations in the JDK did not historically implement the latter correctly, meaning that the readiness information was overridden and previous readiness information was not preserved for cases where a channel is selected and its key was already in the selected-key set. This issue has been fixed in JDK 11. This behavior change may surprise code that invokes `select` (or `selectNow`) and doesn't process keys added to the selected-key set before performing another selection operation.