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https://issues.apache.org/jira/browse/AVRO-991?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13187338#comment-13187338
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Scott Carey edited comment on AVRO-991 at 1/17/12 12:34 AM:
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To help out Tom's checksum issue, we could support user-provided sync markers.
However, two files with the same logical content can differ in other ways too:
User provided metadata, different block sizes, compression codecs, etc.
That brings up another tool -- we could provide a tool that does checksums on
the binary content of an avro data file. and ignores the sync markers.
was (Author: scott_carey):
TO help out Tom's md5 issue, we could support user-provided sync markers.
However, two files with the same logical content can differ in other ways too:
User provided metadata, different block sizes, compression codecs, etc.
That brings up another tool -- we could provide a tool that does checksums on
the binary content of an avro data file. and ignores the sync markers.
> 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/%3cc08f1de9-97a8-4d28-b0ad-5e4a7f32f...@gmail.com%3e
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