julyday2015 opened a new issue #12962:
URL: https://github.com/apache/pulsar/issues/12962
**Describe the bug**
Hi, I found an issue in java client library. When consumer tried to
acknowledge, if consumer acknowledge like following, its working:
`consumer.acknowledge(message.getMessageId())`
But if I do following, it’s failed:
`consumer.acknowledge(MessageId.fromByteArray(message.getMessageId().toByteArray()))`
Ideally, both of the cases should work. There should be something wrong with
serialization and deserialization of MessageId’s toByteArray and fromByteArray
method.
An exception will be thrown if I use second method for acknowledging:
`java.lang.IllegalArgumentException: null
at
org.apache.pulsar.shade.com.google.common.base.Preconditions.checkArgument(Preconditions.java:128)
~[pulsar-client-2.8.1.jar:2.8.1]
at
org.apache.pulsar.client.impl.MultiTopicsConsumerImpl.doAcknowledge(MultiTopicsConsumerImpl.java:425)
~[pulsar-client-2.8.1.jar:2.8.1]
at
org.apache.pulsar.client.impl.ConsumerBase.doAcknowledgeWithTxn(ConsumerBase.java:554)
~[pulsar-client-2.8.1.jar:2.8.1]
at
org.apache.pulsar.client.impl.ConsumerBase.acknowledgeAsync(ConsumerBase.java:494)
~[pulsar-client-2.8.1.jar:2.8.1]
at
org.apache.pulsar.client.impl.ConsumerBase.acknowledgeAsync(ConsumerBase.java:483)
~[pulsar-client-2.8.1.jar:2.8.1]
at
org.apache.pulsar.client.impl.ConsumerBase.acknowledge(ConsumerBase.java:313)
~[pulsar-client-2.8.1.jar:2.8.1]`
**To Reproduce**
Steps to reproduce the behavior:
1. Do consumer acknowledge with
`consumer.acknowledge(MessageId.fromByteArray(message.getMessageId().toByteArray()))`
2. Exception thrown:
`java.lang.IllegalArgumentException: null
at
org.apache.pulsar.shade.com.google.common.base.Preconditions.checkArgument(Preconditions.java:128)
~[pulsar-client-2.8.1.jar:2.8.1]
at
org.apache.pulsar.client.impl.MultiTopicsConsumerImpl.doAcknowledge(MultiTopicsConsumerImpl.java:425)
~[pulsar-client-2.8.1.jar:2.8.1]
at
org.apache.pulsar.client.impl.ConsumerBase.doAcknowledgeWithTxn(ConsumerBase.java:554)
~[pulsar-client-2.8.1.jar:2.8.1]
at
org.apache.pulsar.client.impl.ConsumerBase.acknowledgeAsync(ConsumerBase.java:494)
~[pulsar-client-2.8.1.jar:2.8.1]
at
org.apache.pulsar.client.impl.ConsumerBase.acknowledgeAsync(ConsumerBase.java:483)
~[pulsar-client-2.8.1.jar:2.8.1]
at
org.apache.pulsar.client.impl.ConsumerBase.acknowledge(ConsumerBase.java:313)
~[pulsar-client-2.8.1.jar:2.8.1]`
**Expected behavior**
It should work like `consumer.acknowledge(message.getMessageId())`
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**Additional context**
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