| // Licensed to the Apache Software Foundation (ASF) under one |
| // or more contributor license agreements. See the NOTICE file |
| // distributed with this work for additional information |
| // regarding copyright ownership. The ASF licenses this file |
| // to you under the Apache License, Version 2.0 (the |
| // "License"); you may not use this file except in compliance |
| // with the License. You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, |
| // software distributed under the License is distributed on an |
| // "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| // KIND, either express or implied. See the License for the |
| // specific language governing permissions and limitations |
| // under the License. |
| |
| // Resource Profiles are computed by the planner. They are passed to backend ExecNodes |
| // and DataSinks to configure their memory usage. See ResourceProfile.java for more |
| // details. |
| |
| namespace cpp impala |
| namespace java org.apache.impala.thrift |
| |
| struct TBackendResourceProfile { |
| // The minimum reservation for this plan node in bytes. |
| 1: required i64 min_reservation |
| |
| // The maximum reservation for this plan node in bytes. MAX_INT64 means effectively |
| // unlimited. |
| 2: required i64 max_reservation |
| |
| // The spillable buffer size in bytes to use for this node, chosen by the planner. |
| // Set iff the node uses spillable buffers. |
| 3: optional i64 spillable_buffer_size |
| |
| // The buffer size in bytes that is large enough to fit the largest row to be processed. |
| // Set if the node allocates buffers for rows from the buffer pool. |
| 4: optional i64 max_row_buffer_size |
| } |