Hello everyone,
I don't know if you've noticed, but this week, LDM 6.13.16 was released. Over the past 3 years, an absolute plethora of LDM bugs have been fixed, some of which were serious. Thanks to Steve Emmerson and his team at UNIDATA, and also to Daryl Herzmann, Mike Zuranski, Pete Pokrandt, and Ryan Hickman, all of us have found and have gotten bugs swatted, like:
1. Hundreds of bugs on the NOAAport ingest side. From miscategorizing some Level 3 products (putting them into the HRS feed by accident), the LDM hangs with an "ldmadmin stop", the LDM crashes when a malformed header is received (that's still not 100%, but it takes a heck of a lot now to make it crash, and there's a script which will automatically and immediately restart the LDM if this happens), miscategorized grib headers onto the wrong feeds, loss of data due to outdated assumptions on feed and product size, many products not to show up on AWIPS/EDEX/CAVE, and many more.
2. Logging. Logging crashes older versions of the LDM due to a number of serious bugs, and the error messages sometimes were missing or not useful. Refactored and fixed.
3. It's not the 1990s anymore: OK, mullets ARE making a comeback, but the LDM supposes it is still that way with product size and average number of products. Not anymore.
4. It starts. It stops, Quickly and cleanly. If it sees a problem in the pqact.conf or ldmd.conf files, it immediately lets you know.
5. Queue corruption: what's that? A number of bugs, some major and some obscure which caused that issue to occur, have been fixed.
6. One of my disk partitions is full: but the LDM still works. It will still write data to your not-full partition, and you'll see error messages.
7. Send me an email or a text whenever it goes down for X number of minutes: Yep, it will do that.
8. New GEMPAK grib tables: ensures you get the MRMS products, and new grid parameters that have come out.
Because of the updates, it should, barring any unforeseen "gotchas" from the National Weather Service., will also handle the new super-res Level 3 radar products starting December 1, 2021.
If you would like to honor the IDD and those upstream and downstream from you, as well as Steve and his team for their hard work, you can help you make your feeds more stable in some cases, and make your life easier in others...I very highly recommend you upgrade to this version. If you are a NOAAport direct ingestion site, I would implore you to upgrade as soon as possible. You will notice major improvements immediately if you are running versions 6.13.14 or earlier.
Download:
https://www.unidata.ucar.edu/downloads/ldm/Installation instructions:
https://www.unidata.ucar.edu/software/ldm/ldm-current/basics/source-install-steps.htmlHave a great weekend!
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Gilbert Sebenste
Consulting Meteorologist
AllisonHouse, LLC
