Hi All, I picked up OODT today and immediately thought about an implementation of Apache Gora [0] for abstracting persistence within the CAS metadata catalogue. Right now, for me, the persistence of my metadata catalogue to Lucene or MySQL is sufficient and I have no immediate justification for using some alternative storage mechanism however I noticed that there are a few areas where OODT could generally benefit from the Gora implementation. It is natural that product discovery via daemon driven CAS crawler (for example) will fire product streams of varying nature towards the catalogue storage mechanism. Lucene or MySQL my not be best best option to store such streams of data and/or the best way to later retrieve that data. Gora would enable a much more comprehensive variety of data stores to be available for persistence of catalogue metadata and would also provide a much more flexible model specifically geared towards better solutions for metadata cataloguing. Currently we support Amazon DynamoDB, Accumulo, Cassandra, HBase, HDFS, HSQLDB and MySQL. We have patches for Solr, MongoDB and various file based stores. There is also interest to implement an Oracle NoSQL DB.... don't ask. I notice that the SolrIndexer tool implemented by Paul provides an expressive number of options for indexing to your Solr HTTP server. The gora-solr module would provide all these plus more. I suppose this entirely depends on the requirements for expanding metadata catalogues within the File Manager. Is it envisaged that such an implementation is required for some use cases or would be required? As Gora builds on Hadoop principles, I suppose it would also enable folks use their metadata catalogues in different, possibly useful, use-case adaptable ways. Just an initial thought. Thanks Lewis
[0] http://gora.apache.org -- *Lewis*
