Make Iceberg maxOpenWriters configurable

[guyco33]

Creating more than 100 partitions fails with the following error:

[84148226] Query failed (#20210118_061400_09812_m328m): Exceeded limit of 100 open writers for partitions

trino/plugin/trino-iceberg/src/main/java/io/trino/plugin/iceberg/IcebergPageSink.java

Line 85 in 690d966

private final int maxOpenWriters = 100; // TODO: make this configurable

Possible solution is to take advantage of hive.max-partitions-per-writers configuration that can be set also in iceberg

[phd3]

I think it might be better to just add a new config in the IcebergConfig class, independent of the hive config.

[akshayrai]

Taking a look! I will raise a PR for this!

[findepi]

@phd3 has this been covered in 352?

[phd3]

yes, closing.