[ https://issues.apache.org/jira/browse/GORA-195?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Lewis John McGibbney updated GORA-195: -------------------------------------- Fix Version/s: 0.4 > [gora-hbase] Allow mapping of an array to a single column > --------------------------------------------------------- > > Key: GORA-195 > URL: https://issues.apache.org/jira/browse/GORA-195 > Project: Apache Gora > Issue Type: Improvement > Components: storage-hbase > Affects Versions: 0.2.1 > Environment: HBase 0.90.4 backend, Hadoop 1.0.1 > Reporter: Alfonso Nishikawa > Priority: Trivial > Fix For: 0.4 > > > At this time, defining a mapping in HBase for an array field to a > family:column like this: > {code} > {"name": "A", > "fields": [ > {"name": "field", "type": {"type": "array", "values": "string"}} > ] > } > <class name="A" ...> > <field name="field" family="r" qualifier="c"/> > </class> > {code} > in HBase is discouraging since gets to an unexpected behavior loading parts > of the rest of the record. > So: by now only is allowed mappings of arrays(and maps) to families. > Workaround: enclose the array inside an inner optional record like this: > {code} > {"name": "A", > "fields": [ > {"name":"holder", "type:" ["null", { > "name":"holderRecord", > "type":"record", > "fields": [ > {"name": "field", "type": {"type": "array", > "values": "string"}} > ] > }} > ] > } > {code} > The necessity comes partially if you don't want to create a family for each > array in you HBase database (advised not to do), or if you just want to map > to a column when your array is read-only. -- This message is automatically generated by JIRA. If you think it was sent incorrectly, please contact your JIRA administrators For more information on JIRA, see: http://www.atlassian.com/software/jira