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HDP on Linux – Installation Forum

hadoop Can not start

  • #27924
    Z Cq

    my hadoop Can not start. help!
    starting namenode, logging to /var/log/hadoop/root/hadoop-root-namenode-master.out
    Failed to connect to db jdbc:postgresql://master/ambarirca as user mapred password mapred and driver org.postgresql.Driver with Can’t connect to database jdbc:postgresql://master/ambarirca
    at org.apache.ambari.log4j.hadoop.mapreduce.jobhistory.JobHistoryAppender.activateOptions(
    at org.apache.log4j.config.PropertySetter.activate(
    at org.apache.log4j.config.PropertySetter.setProperties(
    at org.apache.log4j.config.PropertySetter.setProperties(
    at org.apache.log4j.PropertyConfigurator.parseAppender(
    at org.apache.log4j.PropertyConfigurator.parseCategory(
    at org.apache.log4j.PropertyConfigurator.parseCatsAndRenderers(
    at org.apache.log4j.PropertyConfigurator.doConfigure(
    master: starting datanode, logging to /var/log/hadoop/hdfs/hadoop-hdfs-datanode-master.out

  • Author
  • #27929

    Hi Z,

    It looks like you need to start Ambari-server prior to running the script. And if this is an ambari installed cluster is there a reason you are not using ambari to start up hadoop?


    Z Cq

    Hi ted,
    When i Install Ambari-server, can’t start i run then
    Now,I AM find the error is host name.the name is ‘master’ can’t start DataNode,But ‘Master’ is ok


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