Using elasticsearch history provider, the "Monitoring > Latest data" does not show graph or range of values. Only last 500 values are shown.

Steps to reproduce:

• Create trapper item.
• Configure HistoryProvider=elasticsearch, seed data to item.
• Configure HistoryProvider=sql, seed same data.
• Open "Monitoring > Latest data", click on Graph/History for this item and select the range to see this data.
• Observe: chart or values shown.
• Only edit UI config and enable elasticseach history provider again. Then reload this page.
• Observe: no data shown.
• Expected: identical view as for sql history provider case.

Analysis:

Frontend is not sending the correct request for elasticsearch. Now the requested range is interpreted in millis at elasticsearch side, whilst frontend uses seconds, as a result, selected range is in distant past.

There are two approaches to solve this:

• cast the integer to string (will implicitly query ES for seconds again)
• add an explicit 'format' => 'epoch_second' to requests.

References:

• Numeric date range value