bharanic-dev opened a new issue #11521:
URL: https://github.com/apache/pulsar/issues/11521
**Describe the bug**
Under some scenarios, the following NPE exception is seen in Pulsar broker
logs.
{"instant":{"epochSecond":1626050179,"nanoOfSecond":804217000},"thread":"bookkeeper-ml-workers-OrderedExecutor-7-0","level":"ERROR","loggerName":"org.apache.bookkeeper.common.util.SafeRunnable","message":"Unexpected
throwable caught
","thrown":{"commonElementCount":0,"name":"java.lang.NullPointerException","extendedStackTrace":"java.lang.NullPointerException:
null\n\tat
org.apache.bookkeeper.mledger.impl.OpReadEntry.lambda$readEntriesFailed$0(OpReadEntry.java:94)
~[org.apache.pulsar-managed-ledger-2.7.0.SPLK.13655131.jar:2.7.0.SPLK.13655131]\n\tat
org.apache.bookkeeper.mledger.util.SafeRun$1.safeRun(SafeRun.java:32)
~[org.apache.pulsar-managed-ledger-2.7.0.SPLK.13655131.jar:2.7.0.SPLK.13655131]\n\tat
org.apache.bookkeeper.common.util.SafeRunnable.run(SafeRunnable.java:36)
[org.apache.bookkeeper-bookkeeper-common-4.11.0.SPLK.12804275.jar:?]\n\tat
org.apache.bookkeeper.common.util.OrderedExecutor$TimedRunnable.run(OrderedExecutor.java:203)
[org.apache.bookkeeper-bookkeeper-common-4.
11.0.SPLK.12804275.jar:?]\n\tat
org.apache.bookkeeper.common.util.OrderedExecutor$TimedRunnable.run(OrderedExecutor.java:203)
[org.apache.bookkeeper-bookkeeper-common-4.11.0.SPLK.12804275.jar:?]\n\tat
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
[?:?]\n\tat
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
[?:?]\n\tat
io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30)
[io.netty-netty-common-4.1.60.Final.jar:4.1.60.Final]\n\tat
java.lang.Thread.run(Thread.java:834)
[?:?]\n"},"endOfBatch":false,"loggerFqcn":"org.apache.logging.slf4j.Log4jLogger","contextMap":{},"threadId":99,"threadPriority":5,"time":"2021-07-12T00:02:30Z","service":"pulsar","hostname":"broker-2"}
**To Reproduce**
Currently, I don't have a reliable way to reproduce the problem.
**Expected behavior**
No NPE
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