6.1. Known Issues for Hadoop

  • File upload fails to upload in NFS-MountDir.

    Problem: While uploading files to NFS-MountDir, the following error is reported in the DataNode log file:

    INFO org.apache.hadoop.hdfs.nfs.nfs3.OpenFileCtx: requesed offset=4980736 and current filesize=0

    Workaround: On some environments, especially for virtualized environments, copying large files of size close to 1GB fails intermittently. This issue is expected to be addressed in the upcoming release.

  • Use of init.d scripts for starting or stopping Hadoop services, is not recommended.

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