[fix][broker] Fix NPE after publishing a tombstone to the service unit channel #22859
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…t channel ### Motivation NPE will happen in `UnloadManager#handleEvent` after apache#22743. It's because the `Init` state is always associated with a null `ServiceUnitStateData`. ``` java.lang.NullPointerException: Cannot invoke "org.apache.pulsar.broker.loadbalance.extensions.channel.ServiceUnitStateData.force()" because "data" is null at org.apache.pulsar.broker.loadbalance.extensions.manager.UnloadManager.handleEvent(UnloadManager.java:204) ~[classes/:?] at org.apache.pulsar.broker.loadbalance.extensions.channel.StateChangeListeners.lambda$notify$3(StateChangeListeners.java:74) ~[classes/:?] at java.base/java.util.concurrent.CopyOnWriteArrayList.forEach(CopyOnWriteArrayList.java:807) ~[?:?] at org.apache.pulsar.broker.loadbalance.extensions.channel.StateChangeListeners.notify(StateChangeListeners.java:72) ~[classes/:?] at org.apache.pulsar.broker.loadbalance.extensions.channel.ServiceUnitStateChannelImpl.handleInitEvent(ServiceUnitStateChannelImpl.java:902) ~[classes/:?] at org.apache.pulsar.broker.loadbalance.extensions.channel.ServiceUnitStateChannelImpl.handle(ServiceUnitStateChannelImpl.java:715) ~[classes/:?] ``` ### Modifications In `UnloadManager#handleEvent`, assume `data` is null and call `complete` directly. Fix `UnloadManagerTest`, which passes a non-null `ServiceUnitStateData` and `Init` to `handleEvent`.
BewareMyPower
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lhotari,
Technoboy-,
codelipenghui,
RobertIndie,
Demogorgon314 and
heesung-sn
dao-jun
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Jun 6, 2024
heesung-sn
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Jun 6, 2024
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Thank you for catching this. |
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@BewareMyPower |
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The checkstyle issue is fixed now. |
Demogorgon314
approved these changes
Jun 7, 2024
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…t channel (apache#22859) (cherry picked from commit 9326a08)
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…t channel (apache#22859) (cherry picked from commit 9326a08)
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…t channel (apache#22859) (cherry picked from commit 9326a08) (cherry picked from commit 6eac7e5)
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…t channel (apache#22859) (cherry picked from commit 9326a08)
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…t channel (apache#22859) (cherry picked from commit 9326a08)
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…t channel (apache#22859) (cherry picked from commit 9326a08)
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…t channel (apache#22859) (cherry picked from commit 9326a08) (cherry picked from commit 6eac7e5)
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…t channel (apache#22859) (cherry picked from commit 9326a08) (cherry picked from commit 6eac7e5)
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…t channel (apache#22859) (cherry picked from commit 9326a08) (cherry picked from commit 6eac7e5) (cherry picked from commit 9ffbffc)
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…t channel (apache#22859) (cherry picked from commit 9326a08) (cherry picked from commit 6eac7e5) (cherry picked from commit 9ffbffc)
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Motivation
NPE will happen in
UnloadManager#handleEventafter #22743. It's because theInitstate is always associated with a nullServiceUnitStateData.Modifications
In
UnloadManager#handleEvent, assumedatais null and callcompletedirectly. FixUnloadManagerTest, which passes a non-nullServiceUnitStateDataandInittohandleEvent.Documentation
docdoc-requireddoc-not-neededdoc-completeMatching PR in forked repository
PR in forked repository: