: <field name="indexed_timestamp" type="date" indexed="true" stored="true" default="NOW" multiValued="false"/>
: For some reason when doing delta indexing via DIH, this field is not being updated. : : Are timestamp fields updated during DELTA updates? timestamp fields aren't treated any differnetly then any other field -- as far as Solr is concerned this just date field that happens to have a default value specified in case the "client" adding documents doesn't specify a value for this field -- in your case the "client" is DIH. One thing that isn't clear from the way your worded your question is wether you realize that when DIH does a "delta-import" only new documents matching your deltaQuery are "updated" in the index -- all other existing documents are left alone (with their "old" value for the "indexed_timestamp" field) ... however you should be able to see that any *new* documents have a value for the "indexed_timestamp" field. Perhaps the documents you are looking at where "this field is not being updated" weren't actually updated as part of the deltaQuery? if you look at the output from loading DIH in your browser, it will tell you how many documents were processed as a result of your last delta-import, and the log files will show you the uniqueKey of each doc so you can see exactly what was updated. -Hoss
