HBase Forum

HBASE Regions Server Warning

  • #12016

    While running HDP 1.1 (HDFS version, HBASE version:

    I am seeing this warning in my region server log files:
    2012-11-13 13:41:21,334 WARN org.apache.hadoop.hdfs.DFSClient: BlockReaderLocal: Removing blk_-3202046197278941888_18303 from cache because local file /hadoop/hdfs/data/sdi1/current/subdir14/blk_-3202046197278941888 could not be opened.
    2012-11-13 13:41:21,334 WARN org.apache.hadoop.hdfs.DFSClient: Failed to connect to /XX.XX.XX.XXX:50010 for file /apps/hbase/data/-ROOT-/70236052/info/e32228437cb341e1bba3f321e8e7a67e for block blk_-3202046197278941888_18303:java.io.FileNotFoundException: /hadoop/hdfs/data/sdi1/current/subdir14/blk_-3202046197278941888 (Permission denied)

    The ls -l command shows this:
    -rw-r—–. 1 hdfs hdfs 1107 Nov 12 14:17 /hadoop/hdfs/data/sdi1/current/subdir14/blk_-3202046197278941888

    The id command for the hbase user shows:
    uid=492(hbase) gid=491(hbase) groups=491(hbase),504(hadoop)

    The questions are: why am i seeing this warning and what can I do to make it go away ?

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  • Author
  • #12025

    Could the solution be setting dfs.datanode.data.dir.perm to 755 in hdfs-site.xml ?


    Hi Laurentiu,

    This again looks like it is caused by http://hortonworks.com/community/forums/topic/too-many-open-files-rs-logs/
    Once that is corrected for this will probably go away.



    Sorry Ted but just fixing the limits did not fix the issue. My issue is exactly the same as the one described on the cloudera forum: https://groups.google.com/a/cloudera.org/forum/?fromgroups=#!topic/cdh-user/R1vGqj-HQT4.
    I have changed the primary group for the hdfs user to hadoop. It seems to be fine now.


    Hi Laurentiu,

    Thanks for letting us know.


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