Extract source table names from mv query

[seankao-az]

Description

Extract source table names from mv query and add to _meta.properties.sourceTables

This is actually already introduced in #297, but we used it only for validation and didn't store the table names

Example

CREATE MATERIALIZED VIEW myglue_test.default.mv_test_source_tables
AS SELECT status FROM myglue_test.default.http_logs
WITH (
  auto_refresh = true,
  checkpoint_location = 's3://test/'
)

GET flint_myglue_test_default_mv_test_source_tables/_mappings
{
  "flint_myglue_test_default_mv_test_source_tables": {
    "mappings": {
      "_meta": {
        "latestId": "ZmxpbnRfbXlnbHVlX3Rlc3RfZGVmYXVsdF9tdl90ZXN0X3NvdXJjZV90YWJsZXM=",
        "kind": "mv",
        "indexedColumns": [
          {
            "columnType": "int",
            "columnName": "status"
          }
        ],
        "name": "myglue_test.default.mv_test_source_tables",
        "options": {
          "auto_refresh": "true",
          "refresh_interval": "5 minutes",
          "scheduler_mode": "external",
          "incremental_refresh": "false",
          "checkpoint_location": "s3://test/"
        },
        "source": "SELECT status FROM myglue_test.default.http_logs",
        "version": "0.6.0",
        "properties": {
          "sourceTables": [
            "myglue_test.default.http_logs"
          ],
          "env": {
            "SERVERLESS_EMR_VIRTUAL_CLUSTER_ID": "****",
            "SERVERLESS_EMR_JOB_ID": "****"
          }
        }
      },
      "properties": {
        "status": {
          "type": "integer"
        }
      }
    }
  }
}

Related Issues

• [FEATURE] Write metadata to index mappings _meta as read cache for frontend user to access #746

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