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https://issues.apache.org/jira/browse/HADOOP-15596?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16548810#comment-16548810
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Xiao Chen commented on HADOOP-15596:
------------------------------------
Good question on the LBKMSCP log level! While it makes perfect sense to have it
as debug in this case, it's extremely helpful when debugging downstream
invocations. So I'd suggest we do not change it here.
One minor thing we can improve though, is that the {{Aborting since the Request
has failed with all providers}} message should actually be error, because the
caller will see this and fail due to this.
> Stack trace should not be printed out when running hadoop key commands
> ----------------------------------------------------------------------
>
> Key: HADOOP-15596
> URL: https://issues.apache.org/jira/browse/HADOOP-15596
> Project: Hadoop Common
> Issue Type: Improvement
> Components: common
> Affects Versions: 3.1.0
> Reporter: Kitti Nanasi
> Assignee: Kitti Nanasi
> Priority: Minor
> Attachments: HADOOP-15596.001.patch, HADOOP-15596.002.patch
>
>
> Stack trace is printed out if any exception occurs while executing hadoop key
> commands. The whole stack trace should not be printed out.
> For example when the kms is down, we get this error message for the hadoop
> key list command:
> {code:java}
> -bash-4.1$ hadoop key list
> Cannot list keys for KeyProvider:
> KMSClientProvider[http://example.com:16000/kms/v1/]: Connection
> refusedjava.net.ConnectException: Connection refused
> at java.net.PlainSocketImpl.socketConnect(Native Method)
> at
> java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:339)
> at
> java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:200)
> at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:182)
> at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392)
> at java.net.Socket.connect(Socket.java:579)
> at sun.net.NetworkClient.doConnect(NetworkClient.java:175)
> at sun.net.www.http.HttpClient.openServer(HttpClient.java:432)
> at sun.net.www.http.HttpClient.openServer(HttpClient.java:527)
> at sun.net.www.http.HttpClient.<init>(HttpClient.java:211)
> at sun.net.www.http.HttpClient.New(HttpClient.java:308)
> at sun.net.www.http.HttpClient.New(HttpClient.java:326)
> at
> sun.net.www.protocol.http.HttpURLConnection.getNewHttpClient(HttpURLConnection.java:996)
> at
> sun.net.www.protocol.http.HttpURLConnection.plainConnect(HttpURLConnection.java:932)
> at
> sun.net.www.protocol.http.HttpURLConnection.connect(HttpURLConnection.java:850)
> at
> org.apache.hadoop.security.authentication.client.KerberosAuthenticator.authenticate(KerberosAuthenticator.java:186)
> at
> org.apache.hadoop.security.token.delegation.web.DelegationTokenAuthenticator.authenticate(DelegationTokenAuthenticator.java:125)
> at
> org.apache.hadoop.security.authentication.client.AuthenticatedURL.openConnection(AuthenticatedURL.java:216)
> at
> org.apache.hadoop.security.token.delegation.web.DelegationTokenAuthenticatedURL.openConnection(DelegationTokenAuthenticatedURL.java:312)
> at
> org.apache.hadoop.crypto.key.kms.KMSClientProvider$1.run(KMSClientProvider.java:397)
> at
> org.apache.hadoop.crypto.key.kms.KMSClientProvider$1.run(KMSClientProvider.java:392)
> at java.security.AccessController.doPrivileged(Native Method)
> at javax.security.auth.Subject.doAs(Subject.java:415)
> at
> org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1614)
> at
> org.apache.hadoop.crypto.key.kms.KMSClientProvider.createConnection(KMSClientProvider.java:392)
> at
> org.apache.hadoop.crypto.key.kms.KMSClientProvider.getKeys(KMSClientProvider.java:479)
> at
> org.apache.hadoop.crypto.key.KeyShell$ListCommand.execute(KeyShell.java:286)
> at org.apache.hadoop.crypto.key.KeyShell.run(KeyShell.java:79)
> at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:70)
> at org.apache.hadoop.crypto.key.KeyShell.main(KeyShell.java:513)
> {code}
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