humengyu2012 opened a new pull request #3912:
URL: https://github.com/apache/iceberg/pull/3912
Creating a iceberg table in hive like:
```sql
CREATE TABLE test_iceberg (
c1 int,
c2 int,
c3 string
)
PARTITIONED BY (c4 string)
STORED BY 'org.apache.iceberg.mr.hive.HiveIcebergStorageHandler'
TBLPROPERTIES (
'iceberg.identifier-fields' = 'c1,c2'
);
```
We could obtain an iceberg table:
```json
{
"format-version" : 1,
"table-uuid" : "7b05fa2b-9504-4ea2-8e24-5f760a101f2f",
"location" : "hdfs://xxx:8020/user/hive/warehouse/test_iceberg",
"last-updated-ms" : 1642454127758,
"last-column-id" : 4,
"schema" : {
"type" : "struct",
"schema-id" : 0,
"identifier-field-ids" : [ 1, 2 ],
"fields" : [ {
"id" : 1,
"name" : "c1",
"required" : true,
"type" : "int"
}, {
"id" : 2,
"name" : "c2",
"required" : true,
"type" : "int"
}, {
"id" : 3,
"name" : "c3",
"required" : false,
"type" : "string"
}, {
"id" : 4,
"name" : "c4",
"required" : false,
"type" : "string"
} ]
},
"current-schema-id" : 0,
"schemas" : [ {
"type" : "struct",
"schema-id" : 0,
"identifier-field-ids" : [ 1, 2 ],
"fields" : [ {
"id" : 1,
"name" : "c1",
"required" : true,
"type" : "int"
}, {
"id" : 2,
"name" : "c2",
"required" : true,
"type" : "int"
}, {
"id" : 3,
"name" : "c3",
"required" : false,
"type" : "string"
}, {
"id" : 4,
"name" : "c4",
"required" : false,
"type" : "string"
} ]
} ],
"partition-spec" : [ {
"name" : "c4",
"transform" : "identity",
"source-id" : 4,
"field-id" : 1000
} ],
"default-spec-id" : 0,
"partition-specs" : [ {
"spec-id" : 0,
"fields" : [ {
"name" : "c4",
"transform" : "identity",
"source-id" : 4,
"field-id" : 1000
} ]
} ],
"last-partition-id" : 1000,
"default-sort-order-id" : 0,
"sort-orders" : [ {
"order-id" : 0,
"fields" : [ ]
} ],
"properties" : {
"engine.hive.enabled" : "true",
"storage_handler" :
"org.apache.iceberg.mr.hive.HiveIcebergStorageHandler"
},
"current-snapshot-id" : -1,
"snapshots" : [ ],
"snapshot-log" : [ ],
"metadata-log" : [ ]
}
```
Although this feature is supported with json, it is too difficult for most
people to write a json string in hive sql.
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