Avro data files do not generally support random access. SortedKeyValueFile supports random access by key.
http://avro.apache.org/docs/current/api/java/org/apache/avro/hadoop/file/SortedKeyValueFile.Reader.html >From the documentation: "The SortedKeyValueFile is a directory with two files, named 'data' and 'index'. The 'data' file is an ordinary Avro container file with records. Each record has exactly two fields, 'key' and 'value'. The keys are sorted lexicographically. The 'index' file is a small Avro container file mapping keys in the 'data' file to their byte positions. The index file is intended to fit in memory, so it should remain small. There is one entry in the index file for each data block in the Avro container file." Doug On Mon, Jul 1, 2013 at 8:37 AM, [email protected] <[email protected]> wrote: > Hello, > > Is it possible to have random access to a record in an avro file? For > instance, if I have an avro file with a schema containing four records: > employee id, name, address and phone. While reading the file, is there any > way at all to directly jump to a record with employee id 100 instead of > having to scan the whole file every single time and filtering out records? > > Thanks for the help. > > -- > Swarnim
