Github user MaxGekk commented on a diff in the pull request:
https://github.com/apache/spark/pull/21902#discussion_r205937046
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/internal/SQLConf.scala ---
@@ -1449,6 +1451,16 @@ object SQLConf {
.intConf
.checkValues((1 to 9).toSet + Deflater.DEFAULT_COMPRESSION)
.createWithDefault(Deflater.DEFAULT_COMPRESSION)
+
+ val AVRO_XZ_LEVEL = buildConf("spark.sql.avro.xz.level")
--- End diff --
Yes, it is a new feature. The third party doesn't support `LZMA2` codec.
The last one has much better compression than `snappy`/`deflate` even on level
`0-3`. The default level `6` covers most of use cases actually when users need
to store data in AVRO format permanently as an archive. If you strongly against
of the config, I will remove it.
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