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<@U053HNE90>, <@U051221NF> : <https://rbcommons.com/s/twitter/r/2856/>

(... would have done initially, except when we started creating the jar, it was optional, so it would have been a strange special case.)

also, the code change is forwards but not backwards compatible in terms of cache entries

OK, so this is weird - if I tar+gzip the contents of that artifact manually, even with the lowest compression level (-1), I get a much smaller tar.gz file than the original artifact.

So something is funky when we compress those files.

if you `file &lt;file&gt;` does it show up as gzip compressed?

in fact it claims it's compressed with "max compression"

```dev [/tmp]:
[!5017]$ l artifact2/0e9eb0665b66a4836e700875634be6af5abc83e3-JvmFingerprintStrategy.3785eae32dd9_eb122d2a7b96.tgz
-rw------- 1 pl foursquare 453K Sep 21 18:15 artifact2/0e9eb0665b66a4836e700875634be6af5abc83e3-JvmFingerprintStrategy.3785eae32dd9_eb122d2a7b96.tgz

dev [/tmp]:
[!5018]$ l artifact/264b84ee29b4cae159ccc47af8d4be9fdc94e93c-TaskIdentityFingerprintStrategy.a5c9726c9cf2_7c5a1b1af73b.tgz
-rw------- 1 pl foursquare 1.1M Sep 21 18:04 artifact/264b84ee29b4cae159ccc47af8d4be9fdc94e93c-TaskIdentityFingerprintStrategy.a5c9726c9cf2_7c5a1b1af73b.tgz```

Try my experiment of untarring and re-tarring  the second one?

```-rw-r--r--  1 pl   foursquare 5.5M Sep 21 23:19 retarred.tgz```

Did you specify the compression algorithm?