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https://issues.apache.org/jira/browse/HDFS-8012?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Madhan Sundararajan Devaki updated HDFS-8012:
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Component/s: HDFS
> Updatable HAR Filesystem
> ------------------------
>
> Key: HDFS-8012
> URL: https://issues.apache.org/jira/browse/HDFS-8012
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: datanode, HDFS, hdfs-client
> Reporter: Madhan Sundararajan Devaki
> Priority: Critical
>
> Improvement: Updatable HAR Filesystem.
> The following operations may be supported additionally.
> + Add new files [ -a filename-uri1 filename-uri2 ... / -a dirname-uri1
> dirname-uri2 ...]
> + Remove existing files [ -d filename-uri1 filename-uri2 ... / -d
> dirname-uri1 dirname-uri2 ...]
> + Update/Replace existing files (Optional) [ -u old-filename-uri
> new-filename-uri]
> This is required in cases where data is stored in AVRO format in HDFS and the
> corresponding .avsc files are used to create Hive external tables.
> This will lead to the small files (.avsc files in this case) problem when
> there are a large number of tables that need to be loaded into Hive as
> external tables as is the typical case during a Datawarehouse migration.
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