sijie opened a new issue #226: ByteBuf.release() was not called before it's garbage-collected. URL: https://github.com/apache/distributedlog/issues/226 Found following logging on closing log segment. It is harmless but annoying. ``` 2017-10-24 01:40:28,333 - ERROR - [DL-io-0:Slf4JLogger@171] - LEAK: ByteBuf.release() was not called before it's garbage-collected. See http://netty.io/wiki/reference-counted-objects.html for more information. Recent access records: 0 Created at: io.netty.buffer.PooledByteBufAllocator.newDirectBuffer(PooledByteBufAllocator.java:331) io.netty.buffer.AbstractByteBufAllocator.directBuffer(AbstractByteBufAllocator.java:181) io.netty.buffer.AbstractByteBufAllocator.buffer(AbstractByteBufAllocator.java:117) org.apache.distributedlog.EnvelopedEntryWriter.<init>(EnvelopedEntryWriter.java:83) org.apache.distributedlog.Entry.newEntry(Entry.java:52) org.apache.distributedlog.BKLogSegmentWriter.newRecordSetWriter(BKLogSegmentWriter.java:438) org.apache.distributedlog.BKLogSegmentWriter.abortTransmitPacketOnClose(BKLogSegmentWriter.java:558) org.apache.distributedlog.BKLogSegmentWriter.access$200(BKLogSegmentWriter.java:104) org.apache.distributedlog.BKLogSegmentWriter$3.onSuccess(BKLogSegmentWriter.java:528) org.apache.distributedlog.BKLogSegmentWriter$3.onSuccess(BKLogSegmentWriter.java:525) org.apache.distributedlog.common.concurrent.FutureEventListener.accept(FutureEventListener.java:42) org.apache.distributedlog.common.concurrent.FutureEventListener.accept(FutureEventListener.java:26) java.util.concurrent.CompletableFuture.uniWhenComplete(CompletableFuture.java:760) java.util.concurrent.CompletableFuture$UniWhenComplete.tryFire(CompletableFuture.java:736) java.util.concurrent.CompletableFuture.postComplete(CompletableFuture.java:474) java.util.concurrent.CompletableFuture.complete(CompletableFuture.java:1962) org.apache.distributedlog.BKTransmitPacket.notifyTransmitComplete(BKTransmitPacket.java:55) org.apache.distributedlog.BKLogSegmentWriter.addComplete(BKLogSegmentWriter.java:1177) org.apache.bookkeeper.client.PendingAddOp.submitCallback(PendingAddOp.java:311) org.apache.bookkeeper.client.LedgerHandle.sendAddSuccessCallbacks(LedgerHandle.java:1358) org.apache.bookkeeper.client.PendingAddOp.sendAddSuccessCallbacks(PendingAddOp.java:288) org.apache.bookkeeper.client.PendingAddOp.writeComplete(PendingAddOp.java:283) org.apache.bookkeeper.proto.PerChannelBookieClient$AddCompletion$1.writeComplete(PerChannelBookieClient.java:1610) org.apache.bookkeeper.proto.PerChannelBookieClient$AddCompletion.handleResponse(PerChannelBookieClient.java:1650) org.apache.bookkeeper.proto.PerChannelBookieClient$AddCompletion.handleV3Response(PerChannelBookieClient.java:1640) org.apache.bookkeeper.proto.PerChannelBookieClient$5.safeRun(PerChannelBookieClient.java:1094) org.apache.bookkeeper.common.util.SafeRunnable.run(SafeRunnable.java:36) java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) java.util.concurrent.FutureTask.run(FutureTask.java:266) java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$201(ScheduledThreadPoolExecutor.java:180) java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:293) java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) java.lang.Thread.run(Thread.java:748) ```
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