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https://issues.apache.org/jira/browse/BEAM-5428?focusedWorklogId=299184&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-299184
]
ASF GitHub Bot logged work on BEAM-5428:
----------------------------------------
Author: ASF GitHub Bot
Created on: 22/Aug/19 05:56
Start Date: 22/Aug/19 05:56
Worklog Time Spent: 10m
Work Description: rakeshcusat commented on pull request #9374:
[BEAM-5428] Implement Runner support for cache tokens
URL: https://github.com/apache/beam/pull/9374#discussion_r316506735
##########
File path:
runners/flink/src/main/java/org/apache/beam/runners/flink/translation/wrappers/streaming/ExecutableStageDoFnOperator.java
##########
@@ -248,33 +253,45 @@ private StateRequestHandler
getStateRequestHandler(ExecutableStage executableSta
return StateRequestHandlers.delegateBasedUponType(handlerMap);
}
- private static class BagUserStateFactory<K extends ByteString, V, W extends
BoundedWindow>
+ static class BagUserStateFactory<K extends ByteString, V, W extends
BoundedWindow>
implements StateRequestHandlers.BagUserStateHandlerFactory<K, V, W> {
+ /** Upper limit of the number of valid cache tokens to hand out to the
SDK. */
+ private static final int MAX_CACHE_SIZE = 100;
+
private final StateInternals stateInternals;
private final KeyedStateBackend<ByteBuffer> keyedStateBackend;
private final Lock stateBackendLock;
+ /** Cache is scoped by state id. */
+ private final Cache<String, ByteString> cacheTokens;
+
+ private final IdGenerator cacheTokenGenerator;
- private BagUserStateFactory(
+ BagUserStateFactory(
StateInternals stateInternals,
KeyedStateBackend<ByteBuffer> keyedStateBackend,
Lock stateBackendLock) {
this.stateInternals = stateInternals;
this.keyedStateBackend = keyedStateBackend;
this.stateBackendLock = stateBackendLock;
+ this.cacheTokens =
CacheBuilder.newBuilder().maximumSize(MAX_CACHE_SIZE).build();
+ this.cacheTokenGenerator = IdGenerators.incrementingLongs();
Review comment:
I am assuming this will be used later part of the implementation.
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Issue Time Tracking
-------------------
Worklog Id: (was: 299184)
Time Spent: 50m (was: 40m)
> Implement cross-bundle state caching.
> -------------------------------------
>
> Key: BEAM-5428
> URL: https://issues.apache.org/jira/browse/BEAM-5428
> Project: Beam
> Issue Type: Improvement
> Components: sdk-py-harness
> Reporter: Robert Bradshaw
> Assignee: Rakesh Kumar
> Priority: Major
> Time Spent: 50m
> Remaining Estimate: 0h
>
> Tech spec:
> [https://docs.google.com/document/d/1BOozW0bzBuz4oHJEuZNDOHdzaV5Y56ix58Ozrqm2jFg/edit#heading=h.7ghoih5aig5m]
> Relevant document:
> [https://docs.google.com/document/d/1ltVqIW0XxUXI6grp17TgeyIybk3-nDF8a0-Nqw-s9mY/edit#|https://docs.google.com/document/d/1ltVqIW0XxUXI6grp17TgeyIybk3-nDF8a0-Nqw-s9mY/edit]
> Mailing list link:
> [https://lists.apache.org/thread.html/caa8d9bc6ca871d13de2c5e6ba07fdc76f85d26497d95d90893aa1f6@%3Cdev.beam.apache.org%3E]
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