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Add Zstandard compression support.

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Zstandard is a fast lossless compression algorithm targeting real-time compression scenarios at zlib-level and better compression ratios. It's backed by a very fast entropy stage, provided by Huff0 and FSE library.

Zstandard version >= 1.0 is required, which is generally only available on newer distributions.
This commit is contained in:
David Steele
2020-05-04 15:25:27 -04:00
parent 1aaaa94253
commit 47aa765375
37 changed files with 779 additions and 53 deletions
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4
test/lib/pgBackRestTest/Module/Mock/MockAllTest.pm
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@ -209,10 +209,10 @@ sub run
{vm => VM1, remote => true, s3 => false, encrypt => true, delta => false, compress => GZ},
{vm => VM2, remote => false, s3 => false, encrypt => true, delta => true, compress => GZ},
{vm => VM2, remote => true, s3 => true, encrypt => false, delta => false, compress => GZ},
{vm => VM3, remote => false, s3 => false, encrypt => false, delta => true, compress => GZ},
{vm => VM3, remote => false, s3 => false, encrypt => false, delta => true, compress => ZST},
{vm => VM3, remote => true, s3 => true, encrypt => true, delta => false, compress => LZ4},
{vm => VM4, remote => false, s3 => false, encrypt => false, delta => false, compress => LZ4},
{vm => VM4, remote => true, s3 => true, encrypt => true, delta => true, compress => GZ},
{vm => VM4, remote => true, s3 => true, encrypt => true, delta => true, compress => ZST},
)
{
# Only run tests for this vm