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List:       hadoop-dev
Subject:    [jira] [Created] (HADOOP-16770) Compare two directories in HDFS filesystem for every 5 mins interval
From:       "Sayeenath (Jira)" <jira () apache ! org>
Date:       2019-12-18 7:24:00
Message-ID: JIRA.13275170.1576653809000.341829.1576653840325 () Atlassian ! JIRA
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Sayeenath created HADOOP-16770:
----------------------------------

             Summary: Compare two directories in HDFS filesystem for every =
5 mins interval for same cluster. (smiliar like diff command in linux)
                 Key: HADOOP-16770
                 URL: https://issues.apache.org/jira/browse/HADOOP-16770
             Project: Hadoop Common
          Issue Type: Task
          Components: hdfs-client
    Affects Versions: 2.10.0
            Reporter: Sayeenath


Hi team,

Created two hadoop clusters, one cluster is storing files in new directorie=
s based on TIME based directories are created in Hadoop FileSystem say /a/b=
/time/a.txt b.txt..

For every 5 mins, compare this cluster 1 filesytem for two different direct=
ories whether any new directories with list of files are updated or not , i=
f its updated in dir 1, then update those files only to be moved to dir 2. =
Later those new directories files copied to HDFS cluster 2 file system.=C2=
=A0

Currently HDFS not supported hdfs dfs -diff command,=C2=A0 Any solution for=
 this?

Have tried=C2=A0 -copyFromLocal and copyToLocal command, it uses lot of dis=
kspace while copying local to hdfs & hdfs to local.



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