sijie commented on issue #1703: IllegalReferenceCountException at closing EntryLogManagerForSingleEntryLog URL: https://github.com/apache/bookkeeper/issues/1703#issuecomment-426878628 We are seeing this pretty often in pulsar when I attempted to use the latest master in pulsar. https://builds.apache.org/job/pulsar_precommit_java8/4180/testReport/junit/org.apache.bookkeeper.mledger.impl/ManagedLedgerBkTest/ledgerFencedByAutoReplication/ ``` 01:23:25.886 [main:io.netty.util.internal.logging.Slf4JLogger@146] WARN io.netty.util.ReferenceCountUtil - Failed to release a message: PooledUnsafeDirectByteBuf(freed) io.netty.util.IllegalReferenceCountException: refCnt: 0, increment: 1 at io.netty.buffer.AbstractReferenceCountedByteBuf.release0(AbstractReferenceCountedByteBuf.java:100) ~[netty-all-4.1.22.Final.jar:4.1.22.Final] at io.netty.buffer.AbstractReferenceCountedByteBuf.release(AbstractReferenceCountedByteBuf.java:84) ~[netty-all-4.1.22.Final.jar:4.1.22.Final] at io.netty.util.ReferenceCountUtil.release(ReferenceCountUtil.java:88) ~[netty-all-4.1.22.Final.jar:4.1.22.Final] at io.netty.util.ReferenceCountUtil.safeRelease(ReferenceCountUtil.java:113) [netty-all-4.1.22.Final.jar:4.1.22.Final] at org.apache.bookkeeper.bookie.BufferedChannel.close(BufferedChannel.java:91) [bookkeeper-server-4.9.0-20181003-897c643-SNAPSHOT.jar:4.9.0-20181003-897c643-SNAPSHOT] at org.apache.bookkeeper.util.IOUtils.close(IOUtils.java:48) [bookkeeper-server-4.9.0-20181003-897c643-SNAPSHOT.jar:4.9.0-20181003-897c643-SNAPSHOT] at org.apache.bookkeeper.bookie.EntryLogManagerForSingleEntryLog.forceClose(EntryLogManagerForSingleEntryLog.java:221) [bookkeeper-server-4.9.0-20181003-897c643-SNAPSHOT.jar:4.9.0-20181003-897c643-SNAPSHOT] at org.apache.bookkeeper.bookie.EntryLogger.shutdown(EntryLogger.java:1087) [bookkeeper-server-4.9.0-20181003-897c643-SNAPSHOT.jar:4.9.0-20181003-897c643-SNAPSHOT] at org.apache.bookkeeper.bookie.storage.ldb.SingleDirectoryDbLedgerStorage.shutdown(SingleDirectoryDbLedgerStorage.java:272) [bookkeeper-server-4.9.0-20181003-897c643-SNAPSHOT.jar:4.9.0-20181003-897c643-SNAPSHOT] at org.apache.bookkeeper.bookie.storage.ldb.DbLedgerStorage.shutdown(DbLedgerStorage.java:185) [bookkeeper-server-4.9.0-20181003-897c643-SNAPSHOT.jar:4.9.0-20181003-897c643-SNAPSHOT] at org.apache.bookkeeper.bookie.Bookie.shutdown(Bookie.java:1099) [bookkeeper-server-4.9.0-20181003-897c643-SNAPSHOT.jar:4.9.0-20181003-897c643-SNAPSHOT] at org.apache.bookkeeper.bookie.Bookie.shutdown(Bookie.java:1068) [bookkeeper-server-4.9.0-20181003-897c643-SNAPSHOT.jar:4.9.0-20181003-897c643-SNAPSHOT] at org.apache.bookkeeper.proto.BookieServer.shutdown(BookieServer.java:201) [bookkeeper-server-4.9.0-20181003-897c643-SNAPSHOT.jar:4.9.0-20181003-897c643-SNAPSHOT] at org.apache.bookkeeper.test.BookKeeperClusterTestCase.stopBKCluster(BookKeeperClusterTestCase.java:169) [test-classes/:?] at org.apache.bookkeeper.test.BookKeeperClusterTestCase.tearDown(BookKeeperClusterTestCase.java:113) [test-classes/:?] at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_172] at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_172] at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_172] at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_172] ```
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