TIL about Maven Central Search. We've been searching for a tool to find Java packages that provide a class. This does pretty much that; it could be useful for debugging shading failures. Example:

❯ mcs class-search -f org.apache.hadoop.fs.FileSystem
Searching for artifacts containing org.apache.hadoop.fs.FileSystem...
Found 743 results (showing 20)

  Coordinates                                                                            Last updated
  ===========                                                                            ============
  org.scray:scray-hdfs-writer:1.1.1                                                      13 Sep 2018 at 10:08 (IDT)
  org.scray:scray-hdfs-writer:1.1.0                                                      12 Sep 2018 at 11:45 (IDT)
  org.apache.hadoop:hadoop-common-instrumented:0.22.0                                    10 Dec 2011 at 04:33 (IST)
  org.apache.hadoop:hadoop-common:0.22.0                                                 10 Dec 2011 at 04:33 (IST)
  org.jvnet.hudson.hadoop:hadoop-core:0.19.1-hudson-3                                    03 Sep 2009 at 00:41 (IDT)
  org.apache.mahout.hadoop:hadoop-core:0.19.1                                            03 Apr 2009 at 09:53 (IDT)
  org.jvnet.hudson.hadoop:hadoop-core:0.19.1-hudson-2                                    16 Mar 2009 at 00:54 (IST)
  org.jvnet.hudson.hadoop:hadoop-core:0.19.1-hudson-1                                    15 Mar 2009 at 22:40 (IST)
  org.jvnet.hudson.hadoop:hadoop-core:0.19.1                                             12 Mar 2009 at 07:15 (IST)
  org.jvnet.hudson.hadoop:hadoop-core:0.19.0                                             11 Mar 2009 at 08:02 (IST)
  com.tencent.bk.base.datahub:hadoop-common:2.7.3-bkbase.1                               26 Oct 2021 at 06:51 (IDT)
  org.apache.hadoop:hadoop-common:0.23.11                                                19 Jun 2014 at 17:17 (IDT)
  org.apache.hadoop:hadoop-common:0.23.10                                                03 Dec 2013 at 07:46 (IST)
  org.apache.hadoop:hadoop-common:0.23.9                                                 01 Jul 2013 at 17:45 (IDT)
  org.apache.hadoop:hadoop-common:0.23.8                                                 28 May 2013 at 18:27 (IDT)
  org.apache.hadoop:hadoop-common:0.23.7                                                 11 Apr 2013 at 21:26 (IDT)
  com.google.code.maven-play-plugin.org.apache.hadoop:hadoop-core:0.20.2-with-200-826    11 Mar 2013 at 22:15 (IST)
  org.apache.hadoop:hadoop-common:0.23.6                                                 29 Jan 2013 at 05:53 (IST)
  org.apache.servicemix.bundles:org.apache.servicemix.bundles.hadoop-core:0.20.203.0_3   21 Jan 2013 at 04:37 (IST)
  org.apache.hadoop:hadoop-common:0.23.5                                                 20 Nov 2012 at 20:29 (IST)

I initially read that as "scary" instead of "scary" and it made perfect sense to me, as anything that writes to HDFS is by definition, scary.

*scray 🙂 But yours is better.