We are using Java 1.4 and we would like to push data to the ELK stack.
I checked their site and googled and its mostly turning up artifacts/articles
that need more than 1.5.Are they any options since we cant change the current
java version installed.
Regards
Java SE 6 was released in 2006 and if I remember correctly the minimum version for Elasticsearch (first public release in 2010) even in the early days has been that.
The oldest docs available on the Elastic website are for 0.90 and that is ancient. Even if you could run an older version, there are no docs for it, so you really don't want to go there.
While upgrading existing applications can be a challenge, it's still not possible to run new services on newer versions? Anyway, you need to get to Java 6 at the very least or rather 8 for current versions.
Related
I'm trying to use docusign java launcher, but the documents says that it's compatible with java 11, can I used it with java 8 ?
or can I send Raw request instead ?
This is our minimal supported version. It is possible you can get it working with an earlier version (I heard some folks said they were able to do it), but if you don't - we will ask you to upgrade.
Based on Elasticsearch DSL docs (https://elasticsearch-dsl.readthedocs.io/en/latest/)
"you have to use a matching major version" of the library for compatibility.
Specifically:
For Elasticsearch 7.0 and later, use the major version 7 (7.x.y) of the library.
For Elasticsearch 6.0 and later, use the major version 6 (6.x.y) of the library.
What's the best practice then for upgrading from ES 6 to ES 7?
This seems to imply that you can't make your code forward compatible with ES 7 server without making it backwards incompatible with an ES 6 server at the same time.
I'm trying to avoid having two different versions of the code having to exist at the same time by making it forwards compatible in-place first, before upgrading the server. Has anyone done this?
(We have lots of analyzers, tokenizers, multiple Documents, etc that we really don't want to have to duplicate in the code in the middle of the migration.)
There's an upgrade path that you need to follow. There's no need to maintain two different code bases. You should first make sure to upgrade to the latest minor+patch version of the ES 6 releases (i.e. 6.7 or 6.8) and make sure your indexes are compatible with that version.
You should also migrate your clients to the same latest minor+patch version of the ES 6 release, as Elastic makes sure that that version is forward-compatible with the next major version (i.e. ES 7).
Once you've tested everything on ES 6.7/6.8 (and properly backed up your data), you can safely upgrade to ES 7 and your clients will continue to work. Once ES is upgraded, you can upgrade your client to ES 7 as well.
According to the NEST matrix compatibility https://github.com/elastic/elasticsearch-net/blob/master/readme.md#compatibility-matrix, i'm having some troubles!, we worked for a long time with NEST 2.5 client & Elasticsearch 5.4 server without any problem, and now with an in-local test (NEST alway 2.5 version with Elasticsearch 7.5) seems works fine (index creation, indexing, searching ...).
can you please help me to understand ?
The compatibility matrix lists the supported compatible versions. It may well be the case that for the APIs you use that you find that 2.5 works with 7.5, but this is coincidental and not something supported or tested to be compatible. In addition, if you do come across an issue, the first suggestion will be to change to a compatible version.
I've visited the website to download the latest version and I found that 2.8.4 was released after 2.9.1. Why does that happen? And which one should I download?
Why are companies still running Java 6 and 7 while they are end of life? Why is Java 8 still updated when Java 9 and 10 are available?
My point is that at one point, Hadoop 2.7.x was the stable branch. 2.8, 2.9 introduce some potentially breaking or otherwise major, possibly unstable change. The previous releases still need support to address bugs and backport useful features. You're welcome to read the release notes to see what those may be.
It's worth mentioning that the Hadoop vendors like Hortonworks and Cloudera are currently using some version 2.7 with some patches applied on top of what you'd get on the Apache site.
Meanwhile, if you want the latest and greatest, and don't care about stability, you can use Hadoop 3.x, but if you want other things like Spark, Sqoop, HBase, Hive, then I'd suggest staying at 2.7 for now. Or at least read over the documentation for each component and see if you can find installation requirements.
I need to upgrade Oracle 10.1.0 to its higher version 10.1.0.3
Is there any patch file to do this upgradation other than the fresh installation of the higher version?
Patches are usually available on Oracle support site http://support.oracle.com.
Currently available patches start from 10.2 version.
More about versions, lifecycle support in
http://www.oracle.com/us/support/library/lifetime-support-technology-069183.pdf
(Your 10.1 version has limited support)
If you plan to change your environment, you can see that, in case of the problem, you would be on safer side if you choose to go to supported version (newer version) - you not only get help / workaround from support but also fixing patches if needed.
But, of course, you know your environment and priorities better.
If you insist on 10.1 patch and have support contract, try to ask directly Oracle the patch you want. It is not sure you will get it, though.
Hope it helps