@rajinisivaram Observing below transient test failure after recent changes
```
[2018-09-01 19:33:57,370] TRACE About to close the idle connection from
127.0.0.1:57234-127.0.0.1:57235 due to being idle for 5018 millis
(org.apache.kafka.common.network.Selector:705)
[2018-09-01 19:33:57,371] DEBUG [SslTransportLayer
channelId=127.0.0.1:57234-127.0.0.1:57235
key=sun.nio.ch.SelectionKeyImpl@f179795] Failed to send SSL Close message
(org.apache.kafka.common.network.SslTransportLayer:180)
java.io.IOException: Remaining data in the network buffer, can't send SSL close
message.
at
org.apache.kafka.common.network.SslTransportLayer.close(SslTransportLayer.java:165)
at org.apache.kafka.common.utils.Utils.closeAll(Utils.java:830)
at
org.apache.kafka.common.network.KafkaChannel.close(KafkaChannel.java:107)
at org.apache.kafka.common.network.Selector.doClose(Selector.java:836)
at org.apache.kafka.common.network.Selector.close(Selector.java:820)
at
org.apache.kafka.common.network.Selector.maybeCloseOldestConnection(Selector.java:708)
at org.apache.kafka.common.network.Selector.poll(Selector.java:485)
at
org.apache.kafka.common.network.NioEchoServer.run(NioEchoServer.java:156)
[2018-09-01 19:33:57,729] DEBUG Connection with localhost/127.0.0.1
disconnected (org.apache.kafka.common.network.Selector:575)
java.io.EOFException: EOF during read
at
org.apache.kafka.common.network.SslTransportLayer.read(SslTransportLayer.java:569)
at
org.apache.kafka.common.network.NetworkReceive.readFrom(NetworkReceive.java:117)
at
org.apache.kafka.common.network.KafkaChannel.receive(KafkaChannel.java:360)
at
org.apache.kafka.common.network.KafkaChannel.read(KafkaChannel.java:321)
at
org.apache.kafka.common.network.Selector.attemptRead(Selector.java:609)
at
org.apache.kafka.common.network.Selector.pollSelectionKeys(Selector.java:541)
at org.apache.kafka.common.network.Selector.poll(Selector.java:467)
at
org.apache.kafka.common.network.SslTransportLayerTest$4.conditionMet(SslTransportLayerTest.java:707)
at org.apache.kafka.test.TestUtils.waitForCondition(TestUtils.java:269)
at org.apache.kafka.test.TestUtils.waitForCondition(TestUtils.java:256)
at
org.apache.kafka.common.network.SslTransportLayerTest.testNetworkThreadTimeRecorded(SslTransportLayerTest.java:703)
java.lang.AssertionError: Condition not met within timeout 15000. Timed out
waiting for a message to receive from echo server
at org.apache.kafka.test.TestUtils.waitForCondition(TestUtils.java:278)
at org.apache.kafka.test.TestUtils.waitForCondition(TestUtils.java:256)
at
org.apache.kafka.common.network.SslTransportLayerTest.testNetworkThreadTimeRecorded(SslTransportLayerTest.java:703)
```
[ Full content available at: https://github.com/apache/kafka/pull/5597 ]
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