matt mead created AVRO-1276:
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Summary: Support previousSync() call on DataFileWriter as it
exists in DataFileReader
Key: AVRO-1276
URL: https://issues.apache.org/jira/browse/AVRO-1276
Project: Avro
Issue Type: Improvement
Components: java
Affects Versions: 1.7.4
Reporter: matt mead
Assignee: matt mead
The previousSync() call on DataFileReader is useful for building catalogs of
where Avro files live within their containers. In combination with tracking an
ordinal offset for where each record lives relative to a synchronization point,
random access can be achieved on large data-sets stored in Avro.
For operations where construction of such a catalog is useful during the write
phase of data processing, support for querying the DataFileWriter for the same
information would allow for catalog construction without re-reading the written
data or major workarounds to get this information out of a subclass.
I plan to submit patches for this in the near future.
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