Details
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Bug
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Status: Resolved
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Minor
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Resolution: Fixed
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2.7.1
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in core-site.xml:
<property> <name>hadoop.security.authentication</name> <value>kerberos</value> </property> <property> <name>hadoop.security.authorization</name> <value>true</value> </property>
in hdfs-site.xml:
<property> <name>dfs.https.server.keystore.resource</name> <value>/etc/hadoop/conf/ssl-server.xml</value> </property> <property> <name>dfs.https.enable</name> <value>true</value> </property> <property> ...other security props </property>
in core-site.xml: <property> <name> hadoop.security.authentication </name> <value> kerberos </value> </property> <property> <name> hadoop.security.authorization </name> <value> true </value> </property> in hdfs-site.xml: <property> <name> dfs.https.server.keystore.resource </name> <value> /etc/hadoop/conf/ssl-server.xml </value> </property> <property> <name> dfs.https.enable </name> <value> true </value> </property> <property> ...other security props </property>
Description
If ssl is enabled (dfs.https.enable) but ssl-server.xml is not available, a DN will crash during startup while setting up an SSL socket with a NullPointerException:
12/03/07 17:08:36 DEBUG security.Krb5AndCertsSslSocketConnector: useKerb = false, useCerts = true jetty.ssl.password : jetty.ssl.keypassword : 12/03/07 17:08:36 INFO mortbay.log: jetty-6.1.26.cloudera.1 12/03/07 17:08:36 INFO mortbay.log: Started SelectChannelConnector@p-worker35.alley.sara.nl:1006 12/03/07 17:08:36 DEBUG security.Krb5AndCertsSslSocketConnector: Creating new KrbServerSocket for: 0.0.0.0 12/03/07 17:08:36 WARN mortbay.log: java.lang.NullPointerException 12/03/07 17:08:36 WARN mortbay.log: failed Krb5AndCertsSslSocketConnector@0.0.0.0:50475: java.io.IOException: !JsseListener: java.lang.NullPointerException 12/03/07 17:08:36 WARN mortbay.log: failed Server@604788d5: java.io.IOException: !JsseListener: java.lang.NullPointerException 12/03/07 17:08:36 INFO mortbay.log: Stopped Krb5AndCertsSslSocketConnector@0.0.0.0:50475 12/03/07 17:08:36 INFO mortbay.log: Stopped SelectChannelConnector@p-worker35.alley.sara.nl:1006 12/03/07 17:08:37 INFO datanode.DataNode: Waiting for threadgroup to exit, active threads is 0
The same happens if I set an absolute path to an existing dfs.https.server.keystore.resource - in this case the file cannot be found but not even a WARN is given.
Since in dfs.https.server.keystore.resource we know we need to have 4 properties specified (ssl.server.truststore.location, ssl.server.keystore.location, ssl.server.keystore.password, and ssl.server.keystore.keypassword) we should check if they are set and throw an IOException if they are not.
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Issue Links
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- Resolved
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