klsince commented on code in PR #15110: URL: https://github.com/apache/pinot/pull/15110#discussion_r1994044837
########## pinot-controller/src/main/java/org/apache/pinot/controller/helix/core/assignment/instance/InstanceAssignmentDriver.java: ########## @@ -55,40 +55,66 @@ public InstanceAssignmentDriver(TableConfig tableConfig) { public InstancePartitions assignInstances(InstancePartitionsType instancePartitionsType, List<InstanceConfig> instanceConfigs, @Nullable InstancePartitions existingInstancePartitions) { + return assignInstances(instancePartitionsType, instanceConfigs, existingInstancePartitions, (Boolean) null); + } + + public InstancePartitions assignInstances(InstancePartitionsType instancePartitionsType, + List<InstanceConfig> instanceConfigs, @Nullable InstancePartitions existingInstancePartitions, + @Nullable Boolean minimizeDataMovement) { String tableNameWithType = _tableConfig.getTableName(); InstanceAssignmentConfig assignmentConfig = InstanceAssignmentConfigUtils.getInstanceAssignmentConfig(_tableConfig, instancePartitionsType); return getInstancePartitions( instancePartitionsType.getInstancePartitionsName(TableNameBuilder.extractRawTableName(tableNameWithType)), - assignmentConfig, instanceConfigs, existingInstancePartitions, null); + assignmentConfig, instanceConfigs, existingInstancePartitions, null, minimizeDataMovement); } public InstancePartitions assignInstances(InstancePartitionsType instancePartitionsType, List<InstanceConfig> instanceConfigs, @Nullable InstancePartitions existingInstancePartitions, @Nullable InstancePartitions preConfiguredInstancePartitions) { + return assignInstances(instancePartitionsType, instanceConfigs, existingInstancePartitions, + preConfiguredInstancePartitions, null); + } + + public InstancePartitions assignInstances(InstancePartitionsType instancePartitionsType, + List<InstanceConfig> instanceConfigs, @Nullable InstancePartitions existingInstancePartitions, + @Nullable InstancePartitions preConfiguredInstancePartitions, @Nullable Boolean minimizeDataMovement) { String tableNameWithType = _tableConfig.getTableName(); InstanceAssignmentConfig assignmentConfig = InstanceAssignmentConfigUtils.getInstanceAssignmentConfig(_tableConfig, instancePartitionsType); return getInstancePartitions( instancePartitionsType.getInstancePartitionsName(TableNameBuilder.extractRawTableName(tableNameWithType)), - assignmentConfig, instanceConfigs, existingInstancePartitions, preConfiguredInstancePartitions); + assignmentConfig, instanceConfigs, existingInstancePartitions, preConfiguredInstancePartitions, + minimizeDataMovement); } public InstancePartitions assignInstances(String tierName, List<InstanceConfig> instanceConfigs, @Nullable InstancePartitions existingInstancePartitions, InstanceAssignmentConfig instanceAssignmentConfig) { + return assignInstances(tierName, instanceConfigs, existingInstancePartitions, instanceAssignmentConfig, null); + } + + public InstancePartitions assignInstances(String tierName, List<InstanceConfig> instanceConfigs, + @Nullable InstancePartitions existingInstancePartitions, InstanceAssignmentConfig instanceAssignmentConfig, + @Nullable Boolean minimizeDataMovement) { return getInstancePartitions( InstancePartitionsUtils.getInstancePartitionsNameForTier(_tableConfig.getTableName(), tierName), - instanceAssignmentConfig, instanceConfigs, existingInstancePartitions, null); + instanceAssignmentConfig, instanceConfigs, existingInstancePartitions, null, minimizeDataMovement); } private InstancePartitions getInstancePartitions(String instancePartitionsName, InstanceAssignmentConfig instanceAssignmentConfig, List<InstanceConfig> instanceConfigs, @Nullable InstancePartitions existingInstancePartitions, - @Nullable InstancePartitions preConfiguredInstancePartitions) { + @Nullable InstancePartitions preConfiguredInstancePartitions, @Nullable Boolean minimizeDataMovementOverride) { String tableNameWithType = _tableConfig.getTableName(); - LOGGER.info("Starting {} instance assignment for table {}", instancePartitionsName, tableNameWithType); - boolean minimizeDataMovement = instanceAssignmentConfig.isMinimizeDataMovement(); + // minimizeDataMovement might be set back to false within InstanceTagPoolSelector and InstancePartitionSelector + // if existingInstancePartitions is null. + boolean minimizeDataMovement = + minimizeDataMovementOverride == null ? instanceAssignmentConfig.isMinimizeDataMovement() + : minimizeDataMovementOverride; + LOGGER.info("Starting {} instance assignment for table {}, instanceAssignmentConfig.isMinimizeDataMovement()={}, " + + "minimizeDataMovementOverride={}, minimizeDataMovement={}", instancePartitionsName, tableNameWithType, Review Comment: nit: it's not enforced but most log msgs use this convention `... minimizeDataMovementOverride: {}` instead of `=` and better rename `instanceAssignmentConfig.isMinimizeDataMovement()=` to something more readable -- This is an automated message from the Apache Git Service. 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