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[Enhancement] (nereids)implement showDataSkewCommand in nereids
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103 changes: 103 additions & 0 deletions
103
...core/src/main/java/org/apache/doris/nereids/trees/plans/commands/ShowDataSkewCommand.java
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| // 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. | ||
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| package org.apache.doris.nereids.trees.plans.commands; | ||
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| import org.apache.doris.analysis.PartitionNames; | ||
| import org.apache.doris.catalog.Column; | ||
| import org.apache.doris.catalog.Env; | ||
| import org.apache.doris.catalog.MetadataViewer; | ||
| import org.apache.doris.catalog.ScalarType; | ||
| import org.apache.doris.common.AnalysisException; | ||
| import org.apache.doris.common.DdlException; | ||
| import org.apache.doris.common.ErrorCode; | ||
| import org.apache.doris.common.ErrorReport; | ||
| import org.apache.doris.common.util.Util; | ||
| import org.apache.doris.mysql.privilege.PrivPredicate; | ||
| import org.apache.doris.nereids.trees.plans.PlanType; | ||
| import org.apache.doris.nereids.trees.plans.commands.info.TableRefInfo; | ||
| import org.apache.doris.nereids.trees.plans.visitor.PlanVisitor; | ||
| import org.apache.doris.qe.ConnectContext; | ||
| import org.apache.doris.qe.ShowResultSet; | ||
| import org.apache.doris.qe.ShowResultSetMetaData; | ||
| import org.apache.doris.qe.StmtExecutor; | ||
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| import com.google.common.collect.ImmutableList; | ||
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| import java.util.List; | ||
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| /** | ||
| * show table id command | ||
| */ | ||
| public class ShowDataSkewCommand extends ShowCommand { | ||
| public static final ImmutableList<String> TITLE_NAMES = new ImmutableList.Builder<String>() | ||
| .add("PartitionName").add("BucketIdx").add("AvgRowCount").add("AvgDataSize") | ||
| .add("Graph").add("Percent") | ||
| .build(); | ||
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| private final TableRefInfo tableRefInfo; | ||
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| /** | ||
| * constructor | ||
| */ | ||
| public ShowDataSkewCommand(TableRefInfo tableRefInfo) { | ||
| super(PlanType.SHOW_DATA_SKEW_COMMAND); | ||
| this.tableRefInfo = tableRefInfo; | ||
| } | ||
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| @Override | ||
| public ShowResultSet doRun(ConnectContext ctx, StmtExecutor executor) throws Exception { | ||
| tableRefInfo.analyze(ctx); | ||
| // disallow external catalog | ||
| Util.prohibitExternalCatalog(tableRefInfo.getTableNameInfo().getCtl(), this.getClass().getSimpleName()); | ||
| if (!Env.getCurrentEnv().getAccessManager() | ||
| .checkTblPriv(ctx, tableRefInfo.getTableNameInfo().getCtl(), | ||
| tableRefInfo.getTableNameInfo().getDb(), tableRefInfo.getTableNameInfo().getTbl(), | ||
| PrivPredicate.SHOW)) { | ||
| ErrorReport.reportAnalysisException(ErrorCode.ERR_TABLEACCESS_DENIED_ERROR, "SHOW DATA SKEW", | ||
| ctx.getQualifiedUser(), | ||
| ctx.getRemoteIP(), | ||
| tableRefInfo.getTableNameInfo().getDb() + "." + tableRefInfo.getTableNameInfo().getTbl()); | ||
| } | ||
| try { | ||
| tableRefInfo.analyze(ctx); | ||
| Util.prohibitExternalCatalog(tableRefInfo.getTableNameInfo().getCtl(), this.getClass().getSimpleName()); | ||
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| PartitionNames partitionNames = (tableRefInfo.getPartitionNamesInfo() != null) | ||
| ? tableRefInfo.getPartitionNamesInfo().translateToLegacyPartitionNames() : null; | ||
| List<List<String>> results = MetadataViewer.getDataSkew(tableRefInfo.getTableNameInfo().getDb(), | ||
| tableRefInfo.getTableNameInfo().getTbl(), partitionNames); | ||
| return new ShowResultSet(getMetaData(), results); | ||
| } catch (DdlException e) { | ||
| throw new AnalysisException(e.getMessage()); | ||
| } | ||
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| } | ||
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| public ShowResultSetMetaData getMetaData() { | ||
| ShowResultSetMetaData.Builder builder = ShowResultSetMetaData.builder(); | ||
| for (String title : TITLE_NAMES) { | ||
| builder.addColumn(new Column(title, ScalarType.createVarchar(30))); | ||
| } | ||
| return builder.build(); | ||
| } | ||
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| @Override | ||
| public <R, C> R accept(PlanVisitor<R, C> visitor, C context) { | ||
| return visitor.visitShowDataSkewCommand(this, context); | ||
| } | ||
| } |
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50 changes: 50 additions & 0 deletions
50
regression-test/suites/nereids_p0/show/test_nereids_show_data_skew.groovy
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| @@ -0,0 +1,50 @@ | ||
| // 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. | ||
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| suite("test_nereids_show_data_skew") { | ||
| def table = "test_nereids_show_data_skew" | ||
| String dbName = "${table}_db" | ||
| sql "CREATE DATABASE IF NOT EXISTS ${dbName}" | ||
| sql "use ${dbName}" | ||
| // create table and insert data | ||
| sql """ drop table if exists ${table} force""" | ||
| sql """ | ||
| CREATE TABLE ${table} ( | ||
| id int, | ||
| name string, | ||
| pdate DATETIME) | ||
| PARTITION BY RANGE(pdate) ( | ||
| FROM ("2023-04-16") TO ("2023-04-20") INTERVAL 1 DAY | ||
| ) DISTRIBUTED BY HASH(id) BUCKETS 5 | ||
| properties("replication_num" = "1"); | ||
| """ | ||
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| checkNereidsExecute("show data skew from ${dbName}.test_nereids_show_data_skew;") | ||
| def result = sql """show data skew from ${dbName}.test_nereids_show_data_skew;""" | ||
| assertTrue(result.size() == 20) | ||
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| checkNereidsExecute("show data skew from ${dbName}.test_nereids_show_data_skew partition(p_20230416);") | ||
| def result2 = sql """show data skew from ${dbName}.test_nereids_show_data_skew partition(p_20230416);""" | ||
| assertTrue(result2.size() == 5) | ||
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| checkNereidsExecute("show data skew from ${dbName}.test_nereids_show_data_skew partition(p_20230416, p_20230418);") | ||
| def result3 = sql """show data skew from ${dbName}.test_nereids_show_data_skew partition(p_20230416, p_20230418);""" | ||
| assertTrue(result3.size() == 10) | ||
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| } |