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Posted to commits@pulsar.apache.org by GitBox <gi...@apache.org> on 2020/03/19 07:00:17 UTC
[GitHub] [pulsar] murong00 opened a new issue #6561: [pulsar-client] NPE
while call getLastMessageId
murong00 opened a new issue #6561: [pulsar-client] NPE while call getLastMessageId
URL: https://github.com/apache/pulsar/issues/6561
**Describe the bug**
Meet NPE while call getLastMessageId as below:
```
[root@xxx apache-pulsar-2.6.0-SNAPSHOT]# bin/pulsar-admin topics last-message-id persistent://public/default/test
java.lang.RuntimeException: com.fasterxml.jackson.databind.JsonMappingException: (was java.lang.NullPointerException) (through reference chain: org.apache.pulsar.client.impl.BatchMessageIdImpl["acker"]->org.apache.pulsar.client.impl.BatchMessageAcker["outstandingAcks"])
at org.apache.pulsar.admin.cli.CliCommand.print(CliCommand.java:182)
at org.apache.pulsar.admin.cli.CmdTopics$GetLastMessageId.run(CmdTopics.java:773)
at org.apache.pulsar.admin.cli.CmdBase.run(CmdBase.java:71)
at org.apache.pulsar.admin.cli.PulsarAdminTool.run(PulsarAdminTool.java:221)
at org.apache.pulsar.admin.cli.PulsarAdminTool.main(PulsarAdminTool.java:263)
Caused by: com.fasterxml.jackson.databind.JsonMappingException: (was java.lang.NullPointerException) (through reference chain: org.apache.pulsar.client.impl.BatchMessageIdImpl["acker"]->org.apache.pulsar.client.impl.BatchMessageAcker["outstandingAcks"])
at com.fasterxml.jackson.databind.JsonMappingException.wrapWithPath(JsonMappingException.java:394)
at com.fasterxml.jackson.databind.JsonMappingException.wrapWithPath(JsonMappingException.java:353)
at com.fasterxml.jackson.databind.ser.std.StdSerializer.wrapAndThrow(StdSerializer.java:316)
at com.fasterxml.jackson.databind.ser.std.BeanSerializerBase.serializeFields(BeanSerializerBase.java:730)
at com.fasterxml.jackson.databind.ser.BeanSerializer.serialize(BeanSerializer.java:166)
at com.fasterxml.jackson.databind.ser.BeanPropertyWriter.serializeAsField(BeanPropertyWriter.java:727)
at com.fasterxml.jackson.databind.ser.std.BeanSerializerBase.serializeFields(BeanSerializerBase.java:722)
at com.fasterxml.jackson.databind.ser.BeanSerializer.serialize(BeanSerializer.java:166)
at com.fasterxml.jackson.databind.ser.DefaultSerializerProvider._serialize(DefaultSerializerProvider.java:480)
at com.fasterxml.jackson.databind.ser.DefaultSerializerProvider.serializeValue(DefaultSerializerProvider.java:319)
at com.fasterxml.jackson.databind.ObjectWriter$Prefetch.serialize(ObjectWriter.java:1433)
at com.fasterxml.jackson.databind.ObjectWriter._configAndWriteValue(ObjectWriter.java:1135)
at com.fasterxml.jackson.databind.ObjectWriter.writeValueAsString(ObjectWriter.java:1005)
at org.apache.pulsar.admin.cli.CliCommand.print(CliCommand.java:180)
... 4 more
Caused by: java.lang.NullPointerException
at org.apache.pulsar.client.impl.BatchMessageAcker.getOutstandingAcks(BatchMessageAcker.java:69)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at com.fasterxml.jackson.databind.ser.BeanPropertyWriter.serializeAsField(BeanPropertyWriter.java:688)
at com.fasterxml.jackson.databind.ser.std.BeanSerializerBase.serializeFields(BeanSerializerBase.java:722)
... 14 more
```
The reason is that `BatchMessageIdImpl` use a default `BatchMessageAcker` with null value.
**Expected behavior**
`getLastMessageId` should be successful like below:
```
[root@xxx apache-pulsar-2.6.0-SNAPSHOT]# bin/pulsar-admin topics last-message-id persistent://public/default/test
{
"ledgerId" : 5,
"entryId" : 0,
"partitionIndex" : -1,
"batchIndex" : 9,
"acker" : {
"batchSize" : 0,
"prevBatchCumulativelyAcked" : false,
"outstandingAcks" : 0
},
"outstandingAcksInSameBatch" : 0,
"batchSize" : 0
}
```
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[GitHub] [pulsar] sijie closed issue #6561: [pulsar-client] NPE while call
getLastMessageId
Posted by GitBox <gi...@apache.org>.
sijie closed issue #6561: [pulsar-client] NPE while call getLastMessageId
URL: https://github.com/apache/pulsar/issues/6561
----------------------------------------------------------------
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