The Hortonworks Community Connection is now live. A completely rebuilt Q&A forum, Knowledge Base, Code Hub and more, backed by the experts in the industry.

You will be redirected here in 10 seconds. If your are not redirected, click here to visit the new site.

The legacy Hortonworks Forum is now closed. You can view a read-only version of the former site by clicking here. The site will be taken offline on January 31,2016

Hortonworks Sandbox Forum

HDFS File Upload

  • #45732

    I am trying to upload a file to hdfs from java .I am getting below error message.

    WARN org.apache.hadoop.hdfs.server.namenode.FSNamesystem: Not able to place enough replicas, still in need of 1 to reach 1
    Not able to place enough replicas
    2013-12-17 15:27:30,059 ERROR org.apache.hadoop.security.UserGroupInformation: PriviledgedActionException as:ShivaShankar cause:java.io.IOException: File /user/root/seren/abcde.q could only be replicated to 0 nodes, instead of 1
    2013-12-17 15:27:30,059 INFO org.apache.hadoop.ipc.Server: IPC Server handler 8 on 8020, call addBlock(/user/root/seren/abcde.q, DFSClient_2096563590, [Lorg.apache.hadoop.hdfs.protocol.DatanodeInfo;@60666a53) from 10.0.2.2:56021: error: java.io.IOException: File /user/root/seren/abcde.q could only be replicated to 0 nodes, instead of 1
    java.io.IOException: File /user/root/seren/abcde.q could only be replicated to 0 nodes, instead of 1
    at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.getAdditionalBlock(FSNamesystem.java:1983)
    can anyone help me with this.

  • Author
    Replies
  • #45837
    Dave
    Moderator

    Hi Archanaa,

    It looks like your datanode is offline – can you check for errors in your datanode logs in /var/log/hadoop/hdfs

    Thanks

    Dave

    #45838

    Hi Dave,

    My Datanode is up,I am able to do from putty and have issues only when i try to upload from java program which runs on a windows machine

    #45853
    Dave
    Moderator

    Hi Archanaa,

    So if you SSH into the machine itself and upload a file to hdfs as the hdfs user it works correctly?
    Did you write the java program – are you including the correct JARs for the Linux HDP version?

    Thanks

    Dave

    #45855

    Hi Dave,

    If i do ssh and login as root i am able to copy the files.

    I have included the below jars in My Java Program.

    Hadoop-core.jar
    commons-configuration1.6 jar

    Regards,
    Archanaa

The forum ‘Hortonworks Sandbox’ is closed to new topics and replies.

Support from the Experts

A HDP Support Subscription connects you experts with deep experience running Apache Hadoop in production, at-scale on the most demanding workloads.

Enterprise Support »

Become HDP Certified

Real world training designed by the core architects of Hadoop. Scenario-based training courses are available in-classroom or online from anywhere in the world

Training »

Hortonworks Data Platform
The Hortonworks Data Platform is a 100% open source distribution of Apache Hadoop that is truly enterprise grade having been built, tested and hardened with enterprise rigor.
Get started with Sandbox
Hortonworks Sandbox is a self-contained virtual machine with Apache Hadoop pre-configured alongside a set of hands-on, step-by-step Hadoop tutorials.
Modern Data Architecture
Tackle the challenges of big data. Hadoop integrates with existing EDW, RDBMS and MPP systems to deliver lower cost, higher capacity infrastructure.