spark3-extensions/src/test/java/org/apache/iceberg/spark/extensions/TestRollbackToSnapshotProcedure.java

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 * to you under the Apache License, Version 2.0 (the
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package org.apache.iceberg.spark.extensions;

import java.util.List;
import java.util.Map;
import org.apache.iceberg.AssertHelpers;
import org.apache.iceberg.Snapshot;
import org.apache.iceberg.Table;
import org.apache.iceberg.exceptions.ValidationException;
import org.apache.iceberg.relocated.com.google.common.collect.ImmutableList;
import org.apache.spark.sql.AnalysisException;
import org.apache.spark.sql.Dataset;
import org.apache.spark.sql.Row;
import org.apache.spark.sql.catalyst.analysis.NoSuchProcedureException;
import org.junit.After;
import org.junit.Assume;
import org.junit.Test;

public class TestRollbackToSnapshotProcedure extends SparkExtensionsTestBase {

  public TestRollbackToSnapshotProcedure(String catalogName, String implementation, Map<String, String> config) {
    super(catalogName, implementation, config);
  }

  @After
  public void removeTables() {
    sql("DROP TABLE IF EXISTS %s", tableName);
  }

  @Test
  public void testRollbackToSnapshotUsingPositionalArgs() {
    sql("CREATE TABLE %s (id bigint NOT NULL, data string) USING iceberg", tableName);
    sql("INSERT INTO TABLE %s VALUES (1, 'a')", tableName);

    Table table = validationCatalog.loadTable(tableIdent);
    Snapshot firstSnapshot = table.currentSnapshot();

    sql("INSERT INTO TABLE %s VALUES (1, 'a')", tableName);

    assertEquals("Should have expected rows",
        ImmutableList.of(row(1L, "a"), row(1L, "a")),
        sql("SELECT * FROM %s ORDER BY id", tableName));

    table.refresh();

    Snapshot secondSnapshot = table.currentSnapshot();

    List<Object[]> output = sql(
        "CALL %s.system.rollback_to_snapshot('%s', %dL)",
        catalogName, tableIdent, firstSnapshot.snapshotId());

    assertEquals("Procedure output must match",
        ImmutableList.of(row(secondSnapshot.snapshotId(), firstSnapshot.snapshotId())),
        output);

    assertEquals("Rollback must be successful",
        ImmutableList.of(row(1L, "a")),
        sql("SELECT * FROM %s ORDER BY id", tableName));
  }

  @Test
  public void testRollbackToSnapshotUsingNamedArgs() {
    sql("CREATE TABLE %s (id bigint NOT NULL, data string) USING iceberg", tableName);
    sql("INSERT INTO TABLE %s VALUES (1, 'a')", tableName);

    Table table = validationCatalog.loadTable(tableIdent);
    Snapshot firstSnapshot = table.currentSnapshot();

    sql("INSERT INTO TABLE %s VALUES (1, 'a')", tableName);

    assertEquals("Should have expected rows",
        ImmutableList.of(row(1L, "a"), row(1L, "a")),
        sql("SELECT * FROM %s ORDER BY id", tableName));

    table.refresh();

    Snapshot secondSnapshot = table.currentSnapshot();

    List<Object[]> output = sql(
        "CALL %s.system.rollback_to_snapshot(snapshot_id => %dL, table => '%s')",
        catalogName, firstSnapshot.snapshotId(), tableIdent);

    assertEquals("Procedure output must match",
        ImmutableList.of(row(secondSnapshot.snapshotId(), firstSnapshot.snapshotId())),
        output);

    assertEquals("Rollback must be successful",
        ImmutableList.of(row(1L, "a")),
        sql("SELECT * FROM %s ORDER BY id", tableName));
  }

  @Test
  public void testRollbackToSnapshotRefreshesRelationCache() {
    sql("CREATE TABLE %s (id bigint NOT NULL, data string) USING iceberg", tableName);
    sql("INSERT INTO TABLE %s VALUES (1, 'a')", tableName);

    Table table = validationCatalog.loadTable(tableIdent);
    Snapshot firstSnapshot = table.currentSnapshot();

    sql("INSERT INTO TABLE %s VALUES (1, 'a')", tableName);

    table.refresh();

    Snapshot secondSnapshot = table.currentSnapshot();

    Dataset<Row> query = spark.sql("SELECT * FROM " + tableName + " WHERE id = 1");
    query.createOrReplaceTempView("tmp");

    spark.sql("CACHE TABLE tmp");

    assertEquals("View should have expected rows",
        ImmutableList.of(row(1L, "a"), row(1L, "a")),
        sql("SELECT * FROM tmp"));

    List<Object[]> output = sql(
        "CALL %s.system.rollback_to_snapshot(table => '%s', snapshot_id => %dL)",
        catalogName, tableIdent, firstSnapshot.snapshotId());

    assertEquals("Procedure output must match",
        ImmutableList.of(row(secondSnapshot.snapshotId(), firstSnapshot.snapshotId())),
        output);

    assertEquals("View cache must be invalidated",
        ImmutableList.of(row(1L, "a")),
        sql("SELECT * FROM tmp"));

    sql("UNCACHE TABLE tmp");
  }

  @Test
  public void testRollbackToSnapshotWithQuotedIdentifiers() {
    sql("CREATE TABLE %s (id bigint NOT NULL, data string) USING iceberg", tableName);
    sql("INSERT INTO TABLE %s VALUES (1, 'a')", tableName);

    Table table = validationCatalog.loadTable(tableIdent);
    Snapshot firstSnapshot = table.currentSnapshot();

    sql("INSERT INTO TABLE %s VALUES (1, 'a')", tableName);

    assertEquals("Should have expected rows",
        ImmutableList.of(row(1L, "a"), row(1L, "a")),
        sql("SELECT * FROM %s ORDER BY id", tableName));

    table.refresh();

    Snapshot secondSnapshot = table.currentSnapshot();

    StringBuilder quotedNamespaceBuilder = new StringBuilder();
    for (String level : tableIdent.namespace().levels()) {
      quotedNamespaceBuilder.append("`");
      quotedNamespaceBuilder.append(level);
      quotedNamespaceBuilder.append("`");
    }
    String quotedNamespace = quotedNamespaceBuilder.toString();

    List<Object[]> output = sql(
        "CALL %s.system.rollback_to_snapshot('%s', %d)",
        catalogName, quotedNamespace + ".`" + tableIdent.name() + "`", firstSnapshot.snapshotId());

    assertEquals("Procedure output must match",
        ImmutableList.of(row(secondSnapshot.snapshotId(), firstSnapshot.snapshotId())),
        output);

    assertEquals("Rollback must be successful",
        ImmutableList.of(row(1L, "a")),
        sql("SELECT * FROM %s ORDER BY id", tableName));
  }

  @Test
  public void testRollbackToSnapshotWithoutExplicitCatalog() {
    Assume.assumeTrue("Working only with the session catalog", "spark_catalog".equals(catalogName));

    sql("CREATE TABLE %s (id bigint NOT NULL, data string) USING iceberg", tableName);
    sql("INSERT INTO TABLE %s VALUES (1, 'a')", tableName);

    Table table = validationCatalog.loadTable(tableIdent);
    Snapshot firstSnapshot = table.currentSnapshot();

    sql("INSERT INTO TABLE %s VALUES (1, 'a')", tableName);

    assertEquals("Should have expected rows",
        ImmutableList.of(row(1L, "a"), row(1L, "a")),
        sql("SELECT * FROM %s ORDER BY id", tableName));

    table.refresh();

    Snapshot secondSnapshot = table.currentSnapshot();

    // use camel case intentionally to test case sensitivity
    List<Object[]> output = sql(
        "CALL SyStEm.rOLlBaCk_to_SnApShOt('%s', %dL)",
        tableIdent, firstSnapshot.snapshotId());

    assertEquals("Procedure output must match",
        ImmutableList.of(row(secondSnapshot.snapshotId(), firstSnapshot.snapshotId())),
        output);

    assertEquals("Rollback must be successful",
        ImmutableList.of(row(1L, "a")),
        sql("SELECT * FROM %s ORDER BY id", tableName));
  }

  @Test
  public void testRollbackToInvalidSnapshot() {
    sql("CREATE TABLE %s (id bigint NOT NULL, data string) USING iceberg", tableName);

    AssertHelpers.assertThrows("Should reject invalid snapshot id",
        ValidationException.class, "Cannot roll back to unknown snapshot id",
        () -> sql("CALL %s.system.rollback_to_snapshot('%s', -1L)", catalogName, tableIdent));
  }

  @Test
  public void testInvalidRollbackToSnapshotCases() {
    AssertHelpers.assertThrows("Should not allow mixed args",
        AnalysisException.class, "Named and positional arguments cannot be mixed",
        () -> sql("CALL %s.system.rollback_to_snapshot(namespace => 'n1', table => 't', 1L)", catalogName));

    AssertHelpers.assertThrows("Should not resolve procedures in arbitrary namespaces",
        NoSuchProcedureException.class, "not found",
        () -> sql("CALL %s.custom.rollback_to_snapshot('n', 't', 1L)", catalogName));

    AssertHelpers.assertThrows("Should reject calls without all required args",
        AnalysisException.class, "Missing required parameters",
        () -> sql("CALL %s.system.rollback_to_snapshot('t')", catalogName));

    AssertHelpers.assertThrows("Should reject calls without all required args",
        AnalysisException.class, "Missing required parameters",
        () -> sql("CALL %s.system.rollback_to_snapshot(1L)", catalogName));

    AssertHelpers.assertThrows("Should reject calls without all required args",
        AnalysisException.class, "Missing required parameters",
        () -> sql("CALL %s.system.rollback_to_snapshot(table => 't')", catalogName));

    AssertHelpers.assertThrows("Should reject calls with invalid arg types",
        AnalysisException.class, "Wrong arg type for snapshot_id: cannot cast",
        () -> sql("CALL %s.system.rollback_to_snapshot('t', 2.2)", catalogName));

    AssertHelpers.assertThrows("Should reject calls with empty table identifier",
        IllegalArgumentException.class, "Cannot handle an empty identifier",
        () -> sql("CALL %s.system.rollback_to_snapshot('', 1L)", catalogName));
  }
}