[ 
https://issues.apache.org/jira/browse/HDFS-9746?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15129455#comment-15129455
 ] 

Xiao Chen commented on HDFS-9746:
---------------------------------

{{TestKMS#testACLs}} failure I observed in 
https://builds.apache.org/job/PreCommit-HADOOP-Build/8504:
Error Message
{noformat}
org.apache.hadoop.security.authentication.client.AuthenticationException: 
GSSException: No valid credentials provided (Mechanism level: Connection reset)
{noformat}
Stacktrace
{noformat}
java.lang.AssertionError: 
org.apache.hadoop.security.authentication.client.AuthenticationException: 
GSSException: No valid credentials provided (Mechanism level: Connection reset)
        at org.junit.Assert.fail(Assert.java:88)
        at 
org.apache.hadoop.crypto.key.kms.server.TestKMS$9$6.run(TestKMS.java:1296)
        at 
org.apache.hadoop.crypto.key.kms.server.TestKMS$9$6.run(TestKMS.java:1287)
        at java.security.AccessController.doPrivileged(Native Method)
        at javax.security.auth.Subject.doAs(Subject.java:415)
        at 
org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1727)
        at 
org.apache.hadoop.crypto.key.kms.server.TestKMS.doAs(TestKMS.java:251)
        at 
org.apache.hadoop.crypto.key.kms.server.TestKMS.access$100(TestKMS.java:70)
{noformat}
Standard Output
{noformat}
Test KMS running at: http://localhost:50643/kms
2016-02-01 21:09:45,207 WARN  LoadBalancingKMSClientProvider - KMS provider at 
[http://localhost:50643/kms/v1/] threw an IOException [User:client not allowed 
to do 'CREATE_KEY' on 'k']!!
2016-02-01 21:09:45,207 WARN  LoadBalancingKMSClientProvider - Aborting since 
the Request has failed with all KMS providers in the group. !!
2016-02-01 21:09:45,251 WARN  LoadBalancingKMSClientProvider - KMS provider at 
[http://localhost:50643/kms/v1/] threw an IOException [User:client not allowed 
to do 'CREATE_KEY' on 'k']!!
2016-02-01 21:09:45,251 WARN  LoadBalancingKMSClientProvider - Aborting since 
the Request has failed with all KMS providers in the group. !!
2016-02-01 21:09:45,319 WARN  LoadBalancingKMSClientProvider - KMS provider at 
[http://localhost:50643/kms/v1/] threw an IOException [User:client not allowed 
to do 'ROLL_NEW_VERSION' on 'k']!!
2016-02-01 21:09:45,320 WARN  LoadBalancingKMSClientProvider - Aborting since 
the Request has failed with all KMS providers in the group. !!
2016-02-01 21:09:45,359 WARN  LoadBalancingKMSClientProvider - KMS provider at 
[http://localhost:50643/kms/v1/] threw an IOException [User:client not allowed 
to do 'ROLL_NEW_VERSION' on 'k']!!
2016-02-01 21:09:45,359 WARN  LoadBalancingKMSClientProvider - Aborting since 
the Request has failed with all KMS providers in the group. !!
2016-02-01 21:09:45,410 WARN  LoadBalancingKMSClientProvider - KMS provider at 
[http://localhost:50643/kms/v1/] threw an IOException [User:client not allowed 
to do 'GET_KEYS']!!
2016-02-01 21:09:45,410 WARN  LoadBalancingKMSClientProvider - Aborting since 
the Request has failed with all KMS providers in the group. !!
2016-02-01 21:09:45,443 WARN  LoadBalancingKMSClientProvider - KMS provider at 
[http://localhost:50643/kms/v1/] threw an IOException [User:client not allowed 
to do 'GET_KEYS_METADATA']!!
2016-02-01 21:09:45,443 WARN  LoadBalancingKMSClientProvider - Aborting since 
the Request has failed with all KMS providers in the group. !!
2016-02-01 21:09:45,477 WARN  LoadBalancingKMSClientProvider - KMS provider at 
[http://localhost:50643/kms/v1/] threw an IOException [User:client not allowed 
to do 'GET_KEY_VERSION']!!
2016-02-01 21:09:45,478 WARN  LoadBalancingKMSClientProvider - Aborting since 
the Request has failed with all KMS providers in the group. !!
2016-02-01 21:09:45,521 WARN  LoadBalancingKMSClientProvider - KMS provider at 
[http://localhost:50643/kms/v1/] threw an IOException [User:client not allowed 
to do 'GET_CURRENT_KEY' on 'k']!!
2016-02-01 21:09:45,521 WARN  LoadBalancingKMSClientProvider - Aborting since 
the Request has failed with all KMS providers in the group. !!
2016-02-01 21:09:45,559 WARN  LoadBalancingKMSClientProvider - KMS provider at 
[http://localhost:50643/kms/v1/] threw an IOException [User:client not allowed 
to do 'GET_METADATA' on 'k']!!
2016-02-01 21:09:45,559 WARN  LoadBalancingKMSClientProvider - Aborting since 
the Request has failed with all KMS providers in the group. !!
2016-02-01 21:09:45,595 WARN  LoadBalancingKMSClientProvider - KMS provider at 
[http://localhost:50643/kms/v1/] threw an IOException [User:client not allowed 
to do 'GET_KEY_VERSIONS' on 'k']!!
2016-02-01 21:09:45,596 WARN  LoadBalancingKMSClientProvider - Aborting since 
the Request has failed with all KMS providers in the group. !!
2016-02-01 21:09:45,979 ERROR KerberosProtocolHandler - /127.0.0.1:42589 
EXCEPTION
org.apache.mina.filter.codec.ProtocolDecoderException: 
java.lang.NullPointerException: message (Hexdump: 00 00 02 45 6C 82 02 41 30 82 
02 3D A1 03 02 01 05 A2 03 02 01 0C A3 82 01 C4 30 82 01 C0 30 82 01 BC A1 03 
02 01 01 A2 82 01 B3 04 82 01 AF 6E 82 01 AB 30 82 01 A7 A0 03 02 01 05 A1 03 
02 01 0E A2 07 03 05 00 00 00 00 00 A3 81 F6 61 81 F3 30 81 F0 A0 03 02 01 05 
A1 0D 1B 0B 45 58 41 4D 50 4C 45 2E 43 4F 4D A2 20 30 1E A0 03 02 01 02 A1 17 
30 15 1B 06 6B 72 62 74 67 74 1B 0B 45 58 41 4D 50 4C 45 2E 43 4F 4D A3 81 B7 
30 81 B4 A0 03 02 01 11 A2 81 AC 04 81 A9 E8 45 37 63 BA EF 73 10 9E 77 EC 44 
59 5A 2E 8E 87 BE AC E8 01 2C 2C A8 82 EB 69 96 2D E7 04 17 FB FC AC 43 B2 C1 
DF 28 25 64 9F D6 DF 69 90 E6 26 B8 A7 77 7E D2 A1 5A A1 1C 9F D8 10 7A ED 6F 
AD AA 02 09 2F FB 6D A8 B5 77 75 69 46 17 57 D7 15 8A 57 4D 08 2A 28 EA CE 09 
70 0B B0 28 C0 57 E7 FF 33 81 79 0E 17 C7 52 7C DB 24 D2 FA 32 71 BE A1 A5 98 
D9 82 8E 3F 96 1F 28 EF F3 AA 34 AA 79 0B B8 FC 3D 78 B7 8C A8 9A F8 23 F0 02 
1C 47 85 8F 77 F9 5B 89 1C 1E DA D8 8C 93 84 BE 64 82 BE 39 B8 3A 7E 82 7B C9 
86 A4 81 98 30 81 95 A0 03 02 01 11 A2 81 8D 04 81 8A 83 E7 4F 6C A4 F7 09 6F 
56 32 8B 59 E0 70 08 F1 35 FE A0 42 84 5D 3D F5 82 43 04 EF 23 B1 CF 7D 57 59 
9D 0D 43 12 54 0A 16 46 DE E9 99 88 F0 A7 FA B9 E6 E3 CC 81 92 57 AD F4 1D 5B 
4F 81 C2 79 39 16 6A C0 32 09 D6 A5 3C B9 86 20 76 54 36 5B B3 2D 0E 97 36 53 
3E 50 4B 60 90 3F F7 1E EA 6A 70 DE 75 61 5B 20 0F 58 51 C6 0A CF A5 01 68 46 
FF 46 F3 7D 48 3F DB E6 A2 DA 50 6C 1F DA CB A6 9D 64 27 B1 B3 D4 FE 5B 91 51 
A4 69 30 67 A0 07 03 05 00 00 00 00 00 A2 0D 1B 0B 45 58 41 4D 50 4C 45 2E 43 
4F 4D A3 1C 30 1A A0 03 02 01 00 A1 13 30 11 1B 04 48 54 54 50 1B 09 6C 6F 63 
61 6C 68 6F 73 74 A5 11 18 0F 31 39 37 30 30 31 30 31 30 30 30 30 30 30 5A A7 
06 02 04 51 8E BF AE A8 14 30 12 02 01 12 02 01 11 02 01 10)
        at 
org.apache.mina.filter.codec.ProtocolCodecFilter.messageReceived(ProtocolCodecFilter.java:234)
        at 
org.apache.mina.core.filterchain.DefaultIoFilterChain.callNextMessageReceived(DefaultIoFilterChain.java:434)
        at 
org.apache.mina.core.filterchain.DefaultIoFilterChain.access$1200(DefaultIoFilterChain.java:48)
        at 
org.apache.mina.core.filterchain.DefaultIoFilterChain$EntryImpl$1.messageReceived(DefaultIoFilterChain.java:802)
        at 
org.apache.mina.core.filterchain.IoFilterAdapter.messageReceived(IoFilterAdapter.java:120)
        at 
org.apache.mina.core.filterchain.DefaultIoFilterChain.callNextMessageReceived(DefaultIoFilterChain.java:434)
        at 
org.apache.mina.core.filterchain.DefaultIoFilterChain.fireMessageReceived(DefaultIoFilterChain.java:426)
        at 
org.apache.mina.core.polling.AbstractPollingIoProcessor.read(AbstractPollingIoProcessor.java:604)
        at 
org.apache.mina.core.polling.AbstractPollingIoProcessor.process(AbstractPollingIoProcessor.java:564)
        at 
org.apache.mina.core.polling.AbstractPollingIoProcessor.process(AbstractPollingIoProcessor.java:553)
        at 
org.apache.mina.core.polling.AbstractPollingIoProcessor.access$400(AbstractPollingIoProcessor.java:57)
        at 
org.apache.mina.core.polling.AbstractPollingIoProcessor$Processor.run(AbstractPollingIoProcessor.java:892)
        at 
org.apache.mina.util.NamePreservingRunnable.run(NamePreservingRunnable.java:65)
        at 
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
        at 
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
        at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.NullPointerException: message
        at 
org.apache.mina.filter.codec.AbstractProtocolDecoderOutput.write(AbstractProtocolDecoderOutput.java:44)
        at 
org.apache.directory.server.kerberos.protocol.codec.MinaKerberosDecoder.decode(MinaKerberosDecoder.java:65)
        at 
org.apache.mina.filter.codec.ProtocolCodecFilter.messageReceived(ProtocolCodecFilter.java:224)
        ... 15 more
2016-02-01 21:09:45,981 ERROR KERBEROS_LOG - /127.0.0.1:42589 EXCEPTION
org.apache.mina.filter.codec.ProtocolDecoderException: 
java.lang.NullPointerException: message (Hexdump: 00 00 02 45 6C 82 02 41 30 82 
02 3D A1 03 02 01 05 A2 03 02 01 0C A3 82 01 C4 30 82 01 C0 30 82 01 BC A1 03 
02 01 01 A2 82 01 B3 04 82 01 AF 6E 82 01 AB 30 82 01 A7 A0 03 02 01 05 A1 03 
02 01 0E A2 07 03 05 00 00 00 00 00 A3 81 F6 61 81 F3 30 81 F0 A0 03 02 01 05 
A1 0D 1B 0B 45 58 41 4D 50 4C 45 2E 43 4F 4D A2 20 30 1E A0 03 02 01 02 A1 17 
30 15 1B 06 6B 72 62 74 67 74 1B 0B 45 58 41 4D 50 4C 45 2E 43 4F 4D A3 81 B7 
30 81 B4 A0 03 02 01 11 A2 81 AC 04 81 A9 E8 45 37 63 BA EF 73 10 9E 77 EC 44 
59 5A 2E 8E 87 BE AC E8 01 2C 2C A8 82 EB 69 96 2D E7 04 17 FB FC AC 43 B2 C1 
DF 28 25 64 9F D6 DF 69 90 E6 26 B8 A7 77 7E D2 A1 5A A1 1C 9F D8 10 7A ED 6F 
AD AA 02 09 2F FB 6D A8 B5 77 75 69 46 17 57 D7 15 8A 57 4D 08 2A 28 EA CE 09 
70 0B B0 28 C0 57 E7 FF 33 81 79 0E 17 C7 52 7C DB 24 D2 FA 32 71 BE A1 A5 98 
D9 82 8E 3F 96 1F 28 EF F3 AA 34 AA 79 0B B8 FC 3D 78 B7 8C A8 9A F8 23 F0 02 
1C 47 85 8F 77 F9 5B 89 1C 1E DA D8 8C 93 84 BE 64 82 BE 39 B8 3A 7E 82 7B C9 
86 A4 81 98 30 81 95 A0 03 02 01 11 A2 81 8D 04 81 8A 83 E7 4F 6C A4 F7 09 6F 
56 32 8B 59 E0 70 08 F1 35 FE A0 42 84 5D 3D F5 82 43 04 EF 23 B1 CF 7D 57 59 
9D 0D 43 12 54 0A 16 46 DE E9 99 88 F0 A7 FA B9 E6 E3 CC 81 92 57 AD F4 1D 5B 
4F 81 C2 79 39 16 6A C0 32 09 D6 A5 3C B9 86 20 76 54 36 5B B3 2D 0E 97 36 53 
3E 50 4B 60 90 3F F7 1E EA 6A 70 DE 75 61 5B 20 0F 58 51 C6 0A CF A5 01 68 46 
FF 46 F3 7D 48 3F DB E6 A2 DA 50 6C 1F DA CB A6 9D 64 27 B1 B3 D4 FE 5B 91 51 
A4 69 30 67 A0 07 03 05 00 00 00 00 00 A2 0D 1B 0B 45 58 41 4D 50 4C 45 2E 43 
4F 4D A3 1C 30 1A A0 03 02 01 00 A1 13 30 11 1B 04 48 54 54 50 1B 09 6C 6F 63 
61 6C 68 6F 73 74 A5 11 18 0F 31 39 37 30 30 31 30 31 30 30 30 30 30 30 5A A7 
06 02 04 51 8E BF AE A8 14 30 12 02 01 12 02 01 11 02 01 10)
        at 
org.apache.mina.filter.codec.ProtocolCodecFilter.messageReceived(ProtocolCodecFilter.java:234)
        at 
org.apache.mina.core.filterchain.DefaultIoFilterChain.callNextMessageReceived(DefaultIoFilterChain.java:434)
        at 
org.apache.mina.core.filterchain.DefaultIoFilterChain.access$1200(DefaultIoFilterChain.java:48)
        at 
org.apache.mina.core.filterchain.DefaultIoFilterChain$EntryImpl$1.messageReceived(DefaultIoFilterChain.java:802)
        at 
org.apache.mina.core.filterchain.IoFilterAdapter.messageReceived(IoFilterAdapter.java:120)
        at 
org.apache.mina.core.filterchain.DefaultIoFilterChain.callNextMessageReceived(DefaultIoFilterChain.java:434)
        at 
org.apache.mina.core.filterchain.DefaultIoFilterChain.fireMessageReceived(DefaultIoFilterChain.java:426)
        at 
org.apache.mina.core.polling.AbstractPollingIoProcessor.read(AbstractPollingIoProcessor.java:604)
        at 
org.apache.mina.core.polling.AbstractPollingIoProcessor.process(AbstractPollingIoProcessor.java:564)
        at 
org.apache.mina.core.polling.AbstractPollingIoProcessor.process(AbstractPollingIoProcessor.java:553)
        at 
org.apache.mina.core.polling.AbstractPollingIoProcessor.access$400(AbstractPollingIoProcessor.java:57)
        at 
org.apache.mina.core.polling.AbstractPollingIoProcessor$Processor.run(AbstractPollingIoProcessor.java:892)
        at 
org.apache.mina.util.NamePreservingRunnable.run(NamePreservingRunnable.java:65)
        at 
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
        at 
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
        at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.NullPointerException: message
        at 
org.apache.mina.filter.codec.AbstractProtocolDecoderOutput.write(AbstractProtocolDecoderOutput.java:44)
        at 
org.apache.directory.server.kerberos.protocol.codec.MinaKerberosDecoder.decode(MinaKerberosDecoder.java:65)
        at 
org.apache.mina.filter.codec.ProtocolCodecFilter.messageReceived(ProtocolCodecFilter.java:224)
        ... 15 more
2016-02-01 21:09:45,987 ERROR KerberosProtocolHandler - /127.0.0.1:42590 
EXCEPTION
org.apache.mina.filter.codec.ProtocolDecoderException: 
java.lang.NullPointerException: message (Hexdump: 00 00 02 45 6C 82 02 41 30 82 
02 3D A1 03 02 01 05 A2 03 02 01 0C A3 82 01 C4 30 82 01 C0 30 82 01 BC A1 03 
02 01 01 A2 82 01 B3 04 82 01 AF 6E 82 01 AB 30 82 01 A7 A0 03 02 01 05 A1 03 
02 01 0E A2 07 03 05 00 00 00 00 00 A3 81 F6 61 81 F3 30 81 F0 A0 03 02 01 05 
A1 0D 1B 0B 45 58 41 4D 50 4C 45 2E 43 4F 4D A2 20 30 1E A0 03 02 01 02 A1 17 
30 15 1B 06 6B 72 62 74 67 74 1B 0B 45 58 41 4D 50 4C 45 2E 43 4F 4D A3 81 B7 
30 81 B4 A0 03 02 01 11 A2 81 AC 04 81 A9 E8 45 37 63 BA EF 73 10 9E 77 EC 44 
59 5A 2E 8E 87 BE AC E8 01 2C 2C A8 82 EB 69 96 2D E7 04 17 FB FC AC 43 B2 C1 
DF 28 25 64 9F D6 DF 69 90 E6 26 B8 A7 77 7E D2 A1 5A A1 1C 9F D8 10 7A ED 6F 
AD AA 02 09 2F FB 6D A8 B5 77 75 69 46 17 57 D7 15 8A 57 4D 08 2A 28 EA CE 09 
70 0B B0 28 C0 57 E7 FF 33 81 79 0E 17 C7 52 7C DB 24 D2 FA 32 71 BE A1 A5 98 
D9 82 8E 3F 96 1F 28 EF F3 AA 34 AA 79 0B B8 FC 3D 78 B7 8C A8 9A F8 23 F0 02 
1C 47 85 8F 77 F9 5B 89 1C 1E DA D8 8C 93 84 BE 64 82 BE 39 B8 3A 7E 82 7B C9 
86 A4 81 98 30 81 95 A0 03 02 01 11 A2 81 8D 04 81 8A 76 03 CF 4B 54 6A 07 67 
A5 3A CF CE 57 55 BE 1A 1D BA 77 F2 BA DE 27 5C 5D 0E 8D 5C 88 19 A1 AD A2 F5 
E3 66 54 79 8A 25 2C DD 56 44 07 67 48 44 D4 94 68 BA 47 ED 20 0C B9 3C D9 A9 
F2 AA 7F 81 35 E4 4F 5B 47 CB 97 EE 40 67 25 09 A6 15 FC 3D 10 BA 58 A1 7F 84 
5E 4F 69 92 78 B8 04 7C 7A 1E 9A 88 DF B0 E1 5B 09 68 D4 10 D9 AB 4F 5F 4D 37 
24 CB 5D 7C FE 59 9E CF 1F 95 E7 75 B6 DC 61 13 E8 18 34 9C 5D A4 B8 3F C2 C5 
A4 69 30 67 A0 07 03 05 00 00 00 00 00 A2 0D 1B 0B 45 58 41 4D 50 4C 45 2E 43 
4F 4D A3 1C 30 1A A0 03 02 01 00 A1 13 30 11 1B 04 48 54 54 50 1B 09 6C 6F 63 
61 6C 68 6F 73 74 A5 11 18 0F 31 39 37 30 30 31 30 31 30 30 30 30 30 30 5A A7 
06 02 04 44 F2 C4 87 A8 14 30 12 02 01 12 02 01 11 02 01 10)
        at 
org.apache.mina.filter.codec.ProtocolCodecFilter.messageReceived(ProtocolCodecFilter.java:234)
        at 
org.apache.mina.core.filterchain.DefaultIoFilterChain.callNextMessageReceived(DefaultIoFilterChain.java:434)
        at 
org.apache.mina.core.filterchain.DefaultIoFilterChain.access$1200(DefaultIoFilterChain.java:48)
        at 
org.apache.mina.core.filterchain.DefaultIoFilterChain$EntryImpl$1.messageReceived(DefaultIoFilterChain.java:802)
        at 
org.apache.mina.core.filterchain.IoFilterAdapter.messageReceived(IoFilterAdapter.java:120)
        at 
org.apache.mina.core.filterchain.DefaultIoFilterChain.callNextMessageReceived(DefaultIoFilterChain.java:434)
        at 
org.apache.mina.core.filterchain.DefaultIoFilterChain.fireMessageReceived(DefaultIoFilterChain.java:426)
        at 
org.apache.mina.core.polling.AbstractPollingIoProcessor.read(AbstractPollingIoProcessor.java:604)
        at 
org.apache.mina.core.polling.AbstractPollingIoProcessor.process(AbstractPollingIoProcessor.java:564)
        at 
org.apache.mina.core.polling.AbstractPollingIoProcessor.process(AbstractPollingIoProcessor.java:553)
        at 
org.apache.mina.core.polling.AbstractPollingIoProcessor.access$400(AbstractPollingIoProcessor.java:57)
        at 
org.apache.mina.core.polling.AbstractPollingIoProcessor$Processor.run(AbstractPollingIoProcessor.java:892)
        at 
org.apache.mina.util.NamePreservingRunnable.run(NamePreservingRunnable.java:65)
        at 
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
        at 
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
        at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.NullPointerException: message
        at 
org.apache.mina.filter.codec.AbstractProtocolDecoderOutput.write(AbstractProtocolDecoderOutput.java:44)
        at 
org.apache.directory.server.kerberos.protocol.codec.MinaKerberosDecoder.decode(MinaKerberosDecoder.java:65)
        at 
org.apache.mina.filter.codec.ProtocolCodecFilter.messageReceived(ProtocolCodecFilter.java:224)
        ... 15 more
2016-02-01 21:09:45,988 ERROR KERBEROS_LOG - /127.0.0.1:42590 EXCEPTION
org.apache.mina.filter.codec.ProtocolDecoderException: 
java.lang.NullPointerException: message (Hexdump: 00 00 02 45 6C 82 02 41 30 82 
02 3D A1 03 02 01 05 A2 03 02 01 0C A3 82 01 C4 30 82 01 C0 30 82 01 BC A1 03 
02 01 01 A2 82 01 B3 04 82 01 AF 6E 82 01 AB 30 82 01 A7 A0 03 02 01 05 A1 03 
02 01 0E A2 07 03 05 00 00 00 00 00 A3 81 F6 61 81 F3 30 81 F0 A0 03 02 01 05 
A1 0D 1B 0B 45 58 41 4D 50 4C 45 2E 43 4F 4D A2 20 30 1E A0 03 02 01 02 A1 17 
30 15 1B 06 6B 72 62 74 67 74 1B 0B 45 58 41 4D 50 4C 45 2E 43 4F 4D A3 81 B7 
30 81 B4 A0 03 02 01 11 A2 81 AC 04 81 A9 E8 45 37 63 BA EF 73 10 9E 77 EC 44 
59 5A 2E 8E 87 BE AC E8 01 2C 2C A8 82 EB 69 96 2D E7 04 17 FB FC AC 43 B2 C1 
DF 28 25 64 9F D6 DF 69 90 E6 26 B8 A7 77 7E D2 A1 5A A1 1C 9F D8 10 7A ED 6F 
AD AA 02 09 2F FB 6D A8 B5 77 75 69 46 17 57 D7 15 8A 57 4D 08 2A 28 EA CE 09 
70 0B B0 28 C0 57 E7 FF 33 81 79 0E 17 C7 52 7C DB 24 D2 FA 32 71 BE A1 A5 98 
D9 82 8E 3F 96 1F 28 EF F3 AA 34 AA 79 0B B8 FC 3D 78 B7 8C A8 9A F8 23 F0 02 
1C 47 85 8F 77 F9 5B 89 1C 1E DA D8 8C 93 84 BE 64 82 BE 39 B8 3A 7E 82 7B C9 
86 A4 81 98 30 81 95 A0 03 02 01 11 A2 81 8D 04 81 8A 76 03 CF 4B 54 6A 07 67 
A5 3A CF CE 57 55 BE 1A 1D BA 77 F2 BA DE 27 5C 5D 0E 8D 5C 88 19 A1 AD A2 F5 
E3 66 54 79 8A 25 2C DD 56 44 07 67 48 44 D4 94 68 BA 47 ED 20 0C B9 3C D9 A9 
F2 AA 7F 81 35 E4 4F 5B 47 CB 97 EE 40 67 25 09 A6 15 FC 3D 10 BA 58 A1 7F 84 
5E 4F 69 92 78 B8 04 7C 7A 1E 9A 88 DF B0 E1 5B 09 68 D4 10 D9 AB 4F 5F 4D 37 
24 CB 5D 7C FE 59 9E CF 1F 95 E7 75 B6 DC 61 13 E8 18 34 9C 5D A4 B8 3F C2 C5 
A4 69 30 67 A0 07 03 05 00 00 00 00 00 A2 0D 1B 0B 45 58 41 4D 50 4C 45 2E 43 
4F 4D A3 1C 30 1A A0 03 02 01 00 A1 13 30 11 1B 04 48 54 54 50 1B 09 6C 6F 63 
61 6C 68 6F 73 74 A5 11 18 0F 31 39 37 30 30 31 30 31 30 30 30 30 30 30 5A A7 
06 02 04 44 F2 C4 87 A8 14 30 12 02 01 12 02 01 11 02 01 10)
        at 
org.apache.mina.filter.codec.ProtocolCodecFilter.messageReceived(ProtocolCodecFilter.java:234)
        at 
org.apache.mina.core.filterchain.DefaultIoFilterChain.callNextMessageReceived(DefaultIoFilterChain.java:434)
        at 
org.apache.mina.core.filterchain.DefaultIoFilterChain.access$1200(DefaultIoFilterChain.java:48)
        at 
org.apache.mina.core.filterchain.DefaultIoFilterChain$EntryImpl$1.messageReceived(DefaultIoFilterChain.java:802)
        at 
org.apache.mina.core.filterchain.IoFilterAdapter.messageReceived(IoFilterAdapter.java:120)
        at 
org.apache.mina.core.filterchain.DefaultIoFilterChain.callNextMessageReceived(DefaultIoFilterChain.java:434)
        at 
org.apache.mina.core.filterchain.DefaultIoFilterChain.fireMessageReceived(DefaultIoFilterChain.java:426)
        at 
org.apache.mina.core.polling.AbstractPollingIoProcessor.read(AbstractPollingIoProcessor.java:604)
        at 
org.apache.mina.core.polling.AbstractPollingIoProcessor.process(AbstractPollingIoProcessor.java:564)
        at 
org.apache.mina.core.polling.AbstractPollingIoProcessor.process(AbstractPollingIoProcessor.java:553)
        at 
org.apache.mina.core.polling.AbstractPollingIoProcessor.access$400(AbstractPollingIoProcessor.java:57)
        at 
org.apache.mina.core.polling.AbstractPollingIoProcessor$Processor.run(AbstractPollingIoProcessor.java:892)
        at 
org.apache.mina.util.NamePreservingRunnable.run(NamePreservingRunnable.java:65)
        at 
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
        at 
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
        at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.NullPointerException: message
        at 
org.apache.mina.filter.codec.AbstractProtocolDecoderOutput.write(AbstractProtocolDecoderOutput.java:44)
        at 
org.apache.directory.server.kerberos.protocol.codec.MinaKerberosDecoder.decode(MinaKerberosDecoder.java:65)
        at 
org.apache.mina.filter.codec.ProtocolCodecFilter.messageReceived(ProtocolCodecFilter.java:224)
        ... 15 more
2016-02-01 21:09:45,992 WARN  LoadBalancingKMSClientProvider - KMS provider at 
[http://localhost:50643/kms/v1/] threw an IOException 
[org.apache.hadoop.security.authentication.client.AuthenticationException: 
GSSException: No valid credentials provided (Mechanism level: Connection 
reset)]!!
2016-02-01 21:09:45,992 WARN  LoadBalancingKMSClientProvider - Aborting since 
the Request has failed with all KMS providers in the group. !!
{noformat}

> Some Kerberos related tests intermittently fails.
> -------------------------------------------------
>
>                 Key: HDFS-9746
>                 URL: https://issues.apache.org/jira/browse/HDFS-9746
>             Project: Hadoop HDFS
>          Issue Type: Test
>            Reporter: Xiao Chen
>            Assignee: Xiao Chen
>
> So far I've seen {{TestSecureNNWithQJM#testSecureMode}} and 
> {{TestKMS#testACLs}} failing. More details coming in the 1st comment.



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