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https://issues.apache.org/jira/browse/AVRO-991?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13187913#comment-13187913
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Tom White commented on AVRO-991:
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+1 for user-specified sync markers. It would be sufficient to be able to say
"use the default sync marker" for my use case (checking that an Avro data file
generated from a MapReduce program is as expected).
> However, two files with the same logical content can differ in other ways
> too: User provided metadata, different block sizes, compression codecs, etc.
Right, but these can all be set by the user - so being able to control the sync
marker would make everything deterministic.
> Allow combining multiple Avro files within a stream. (no files on disk)
> -----------------------------------------------------------------------
>
> Key: AVRO-991
> URL: https://issues.apache.org/jira/browse/AVRO-991
> Project: Avro
> Issue Type: Improvement
> Components: java
> Affects Versions: 1.6.1
> Reporter: Frank Grimes
>
> It would be nice to be able to do as follows:
> cat file1.avro file2.avro | java -jar avro-tools.jar streamcombine >
> combined-file.avro
> or similarly
>
> hadoop dfs -cat hdfs://hadoop/file1.avro hdfs://hadoop/file2.avro | java
> -jar avro-tools.jar streamcombine | hdfs -put -
> hdfs://hadoop/combined-file.avro
> See the following thread for details:
> http://mail-archives.apache.org/mod_mbox/avro-user/201201.mbox/%[email protected]%3e
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