Fokko commented on PR #7782:
URL: https://github.com/apache/iceberg/pull/7782#issuecomment-1679506371

   I also did some benchmarking, and it is faster:
   
   This branch:
   ```
   ➜  python git:(fd-bump-pydantic) ✗ hyperfine --warmup 1 "python3 
tests/test_benchmark.py" 
   Benchmark 1: python3 tests/test_benchmark.py
     Time (mean ± σ):      1.462 s ±  0.006 s    [User: 1.433 s, System: 0.026 
s]
     Range (min … max):    1.454 s …  1.472 s    10 runs
   ```
   
   Current master:
   ```
   ➜  python git:(master) ✗ hyperfine --warmup 1 "python3 
tests/test_benchmark.py"
   Benchmark 1: python3 tests/test_benchmark.py
     Time (mean ± σ):      1.961 s ±  0.011 s    [User: 1.933 s, System: 0.024 
s]
     Range (min … max):    1.944 s …  1.978 s    10 runs
   ```
   
   This parses 10k json strings:
   ```python
   import json
   
   from pyiceberg.table.metadata import TableMetadataUtil
   
   EXAMPLE_TABLE_METADATA_V2 = {
       "format-version": 2,
       "table-uuid": "9c12d441-03fe-4693-9a96-a0705ddf69c1",
       "location": "s3://bucket/test/location",
       "last-sequence-number": 34,
       "last-updated-ms": 1602638573590,
       "last-column-id": 3,
       "current-schema-id": 1,
       "schemas": [
           {"type": "struct", "schema-id": 0, "fields": [{"id": 1, "name": "x", 
"required": True, "type": "long"}]},
           {
               "type": "struct",
               "schema-id": 1,
               "identifier-field-ids": [1, 2],
               "fields": [
                   {"id": 1, "name": "x", "required": True, "type": "long"},
                   {"id": 2, "name": "y", "required": True, "type": "long", 
"doc": "comment"},
                   {"id": 3, "name": "z", "required": True, "type": "long"},
               ],
           },
       ],
       "default-spec-id": 0,
       "partition-specs": [{"spec-id": 0, "fields": [{"name": "x", "transform": 
"identity", "source-id": 1, "field-id": 1000}]}],
       "last-partition-id": 1000,
       "default-sort-order-id": 3,
       "sort-orders": [
           {
               "order-id": 3,
               "fields": [
                   {"transform": "identity", "source-id": 2, "direction": 
"asc", "null-order": "nulls-first"},
                   {"transform": "bucket[4]", "source-id": 3, "direction": 
"desc", "null-order": "nulls-last"},
               ],
           }
       ],
       "properties": {"read.split.target.size": "134217728"},
       "current-snapshot-id": 3055729675574597004,
       "snapshots": [
           {
               "snapshot-id": 3051729675574597004,
               "timestamp-ms": 1515100955770,
               "sequence-number": 0,
               "summary": {"operation": "append"},
               "manifest-list": "s3://a/b/1.avro",
           },
           {
               "snapshot-id": 3055729675574597004,
               "parent-snapshot-id": 3051729675574597004,
               "timestamp-ms": 1555100955770,
               "sequence-number": 1,
               "summary": {"operation": "append"},
               "manifest-list": "s3://a/b/2.avro",
               "schema-id": 1,
           },
       ],
       "snapshot-log": [
           {"snapshot-id": 3051729675574597004, "timestamp-ms": 1515100955770},
           {"snapshot-id": 3055729675574597004, "timestamp-ms": 1555100955770},
       ],
       "metadata-log": [{"metadata-file": "s3://bucket/.../v1.json", 
"timestamp-ms": 1515100}],
       "refs": {"test": {"snapshot-id": 3051729675574597004, "type": "tag", 
"max-ref-age-ms": 10000000}},
   }
   
   
   metadata_v2 = json.dumps(EXAMPLE_TABLE_METADATA_V2)
   
   for _ in range(10000):
       TableMetadataUtil.parse_raw(metadata_v2)
   ```


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