datalake/avro: fixed encoding decimal values

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datalake/avro: fixed encoding decimal values #24113

Closed mmaslankaprv closed 1 day ago

mmaslankaprv commented 3 days ago

In Java BigInteger.toByteArray() method is used to encode Avro decimals the method returns an array where the first element is the most significant byte of the encoded decimal. This commit fixes Redpanda Avro Bigdecimal encoding.

Backports Required

[ ] none - not a bug fix
[ ] none - this is a backport
[ ] none - issue does not exist in previous branches
[ ] none - papercut/not impactful enough to backport
[ ] v24.2.x
[ ] v24.1.x
[ ] v23.3.x

Release Notes

none

vbotbuildovich commented 2 days ago

ducktape was retried in https://buildkite.com/redpanda/redpanda/builds/58010#019325aa-ecf6-4abd-8485-be0d3411e004 ducktape was retried in https://buildkite.com/redpanda/redpanda/builds/58054#01932a90-d8e0-4f1e-9c55-8930ad3c733b

vbotbuildovich commented 2 days ago

the below tests from https://buildkite.com/redpanda/redpanda/builds/58045#0193294e-c2d6-4e62-932c-6a62350ab24b have failed and will be retried

gtest_raft_rpunit