Jason918 opened a new issue #12894:
URL: https://github.com/apache/pulsar/issues/12894
**Describe the bug**
Metadata store is generating a lot of warning logs in unit test lately. Not
sure if it will appears in running broker.
Will causing some unit test running timeout. like #12883
```
2021-11-19T10:15:35,679+0000 [metadata-store-117-1] WARN
com.github.benmanes.caffeine.cache.LocalAsyncCache - Exception thrown during
asynchronous load
java.util.concurrent.CompletionException:
org.apache.pulsar.metadata.api.MetadataStoreException$ContentDeserializationException:
Failed to deserialize payload for key '/counters/producer-name'
at
java.util.concurrent.CompletableFuture.encodeRelay(CompletableFuture.java:367)
~[?:?]
at
java.util.concurrent.CompletableFuture.completeRelay(CompletableFuture.java:376)
~[?:?]
at
java.util.concurrent.CompletableFuture$UniCompose.tryFire(CompletableFuture.java:1074)
~[?:?]
at
java.util.concurrent.CompletableFuture.postComplete(CompletableFuture.java:506)
~[?:?]
at
java.util.concurrent.CompletableFuture.complete(CompletableFuture.java:2073)
~[?:?]
at
org.apache.pulsar.metadata.impl.ZKMetadataStore.lambda$get$7(ZKMetadataStore.java:139)
~[pulsar-metadata-2.10.0-SNAPSHOT.jar:2.10.0-SNAPSHOT]
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
[?:?]
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
[?:?]
at
io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30)
[netty-common-4.1.68.Final.jar:4.1.68.Final]
at java.lang.Thread.run(Thread.java:829) [?:?]
Caused by:
org.apache.pulsar.metadata.api.MetadataStoreException$ContentDeserializationException:
Failed to deserialize payload for key '/counters/producer-name'
at
org.apache.pulsar.metadata.cache.impl.MetadataCacheImpl.lambda$readValueFromStore$0(MetadataCacheImpl.java:111)
~[pulsar-metadata-2.10.0-SNAPSHOT.jar:2.10.0-SNAPSHOT]
at
java.util.concurrent.CompletableFuture$UniCompose.tryFire(CompletableFuture.java:1072)
~[?:?]
... 7 more
Caused by: com.fasterxml.jackson.databind.exc.MismatchedInputException: No
content to map due to end-of-input
at [Source: (byte[])""; line: 1, column: 0]
at
com.fasterxml.jackson.databind.exc.MismatchedInputException.from(MismatchedInputException.java:59)
~[jackson-databind-2.12.3.jar:2.12.3]
at
com.fasterxml.jackson.databind.ObjectMapper._initForReading(ObjectMapper.java:4688)
~[jackson-databind-2.12.3.jar:2.12.3]
at
com.fasterxml.jackson.databind.ObjectMapper._readMapAndClose(ObjectMapper.java:4586)
~[jackson-databind-2.12.3.jar:2.12.3]
at
com.fasterxml.jackson.databind.ObjectMapper.readValue(ObjectMapper.java:3643)
~[jackson-databind-2.12.3.jar:2.12.3]
at
org.apache.pulsar.metadata.cache.impl.JSONMetadataSerdeSimpleType.deserialize(JSONMetadataSerdeSimpleType.java:42)
~[pulsar-metadata-2.10.0-SNAPSHOT.jar:2.10.0-SNAPSHOT]
at
org.apache.pulsar.metadata.cache.impl.MetadataCacheImpl.lambda$readValueFromStore$0(MetadataCacheImpl.java:107)
~[pulsar-metadata-2.10.0-SNAPSHOT.jar:2.10.0-SNAPSHOT]
at
java.util.concurrent.CompletableFuture$UniCompose.tryFire(CompletableFuture.java:1072)
~[?:?]
... 7 more
```
**To Reproduce**
Steps to reproduce the behavior:
1. Go to unit test in puslar-broker, eg
org.apache.pulsar.broker.service.persistent.PersistentStreamingDispatcherBlockConsumerTest
2. Run any test case.
3. See the warning log.
**Expected behavior**
No error
**Screenshots**
no
**Desktop (please complete the following information):**
- OS: macOS
**Additional context**
Add any other context about the problem here.
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