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Lokesh Jain commented on HDFS-13960: ------------------------------------ [~adam.antal] Thanks for reviewing the patch! v2 patch addresses your comments. > hdfs dfs -checksum command should optionally show block size in output > ---------------------------------------------------------------------- > > Key: HDFS-13960 > URL: https://issues.apache.org/jira/browse/HDFS-13960 > Project: Hadoop HDFS > Issue Type: Improvement > Components: hdfs > Reporter: Adam Antal > Assignee: Lokesh Jain > Priority: Minor > Attachments: HDFS-13960.001.patch, HDFS-13960.002.patch > > > The hdfs checksum command computes the checksum in a distributed manner, > which would take into account the block size. In other words, the block size > determines how the file will be broken up. > Therefore itĀ can happen that the checksum command produces different outputs > for the exact same file only differing in the block size: > checksum(fileABlock1) + checksum(fileABlock2) != checksum(fileABlock1 + > fileABlock2) > I suggest to add an option to the hdfs dfs -checksum command which would > displays the block sizeĀ along with the output, and that could also be helpful > in some other cases where this piece of information is needed. -- This message was sent by Atlassian JIRA (v7.6.3#76005) --------------------------------------------------------------------- To unsubscribe, e-mail: hdfs-issues-unsubscr...@hadoop.apache.org For additional commands, e-mail: hdfs-issues-h...@hadoop.apache.org