pri1712 commented on code in PR #19011:
URL: https://github.com/apache/pinot/pull/19011#discussion_r3657625946
##########
pinot-broker/src/main/java/org/apache/pinot/broker/requesthandler/BaseBrokerRequestHandler.java:
##########
@@ -480,4 +496,110 @@ protected void onQueryFinish(long requestId) {
protected boolean isQueryCancellationEnabled() {
return _enableQueryCancellation;
}
+
+ /**
+ * Appends a where clause to the query to filter out of retention data if
SKIP_OUT_OF_RETENTION_VALUES is
+ * set to True in query Options.
+ * @param sqlNodeAndOptions
+ */
+ private void applySkipOutOfRetentionValuesIfNeeded(SqlNodeAndOptions
sqlNodeAndOptions) {
+ Map<String, String> options = sqlNodeAndOptions.getOptions();
+ if
(!Boolean.parseBoolean(options.get(QueryOptionKey.SKIP_OUT_OF_RETENTION_VALUES)))
{
+ return;
+ }
+
+ SqlNode sqlNode = sqlNodeAndOptions.getSqlNode();
+ if (sqlNode == null) {
+ return;
+ }
+
+ // Resolve the inner SqlSelect, unwrapping SqlOrderBy if needed.
+ // SqlWith (CTEs) and other statement types are not supported.
+ SqlSelect sqlSelect;
+ if (sqlNode instanceof SqlSelect) {
+ sqlSelect = (SqlSelect) sqlNode;
+ } else if (sqlNode instanceof SqlOrderBy) {
+ SqlNode query = ((SqlOrderBy) sqlNode).query;
+ if (!(query instanceof SqlSelect)) {
+ return;
+ }
+ sqlSelect = (SqlSelect) query;
+ } else {
+ return;
+ }
+
+ TableNameExtractor tableNameExtractor = new TableNameExtractor();
+ tableNameExtractor.extractTableNames(sqlSelect);
+ Set<String> tableNames = tableNameExtractor.getTableNames();
+ if (tableNames.isEmpty()) {
+ return;
+ }
+
+ // Multi-table queries (JOINs) are not supported: it is ambiguous which
table's retention
+ // applies, and injecting a filter with the wrong table's time column
would produce
+ // incorrect results. Callers must issue separate single-table queries.
+ if (tableNames.size() > 1) {
+ LOGGER.debug("skipOutOfRetentionValues is not supported for multi-table
queries; skipping filter injection");
+ return;
+ }
+
+ String rawTableName =
TableNameBuilder.extractRawTableName(tableNames.iterator().next());
+
+ TableConfig tableConfig = _tableCache.getTableConfig(rawTableName);
+ Schema schema = _tableCache.getSchema(rawTableName);
+ if (tableConfig == null || schema == null ||
tableConfig.getValidationConfig() == null) {
+ return;
+ }
+
+ //get timestamp column and retention details
+ String timeColumnName =
tableConfig.getValidationConfig().getTimeColumnName();
+ String retentionTimeUnit =
tableConfig.getValidationConfig().getRetentionTimeUnit();
+ String retentionTimeValue =
tableConfig.getValidationConfig().getRetentionTimeValue();
+ if (StringUtils.isEmpty(timeColumnName) ||
StringUtils.isEmpty(retentionTimeUnit)
+ || StringUtils.isEmpty(retentionTimeValue)) {
+ return;
+ }
+ try {
+ long retentionTimeMs =
+
TimeUnit.valueOf(retentionTimeUnit.toUpperCase()).toMillis(Long.parseLong(retentionTimeValue));
+ long cutoffMs = System.currentTimeMillis() - retentionTimeMs;
+ DateTimeFieldSpec timeFieldSpec =
schema.getSpecForTimeColumn(timeColumnName);
+ if (timeFieldSpec == null) {
+ return;
+ }
+
+ DateTimeFormatSpec formatSpec = new
DateTimeFormatSpec(timeFieldSpec.getFormat());
+ String formattedCutoffTime = formatSpec.fromMillisToFormat(cutoffMs);
+
+ //add where clause to the AST
+ SqlIdentifier timeColNode = new SqlIdentifier(timeColumnName,
SqlParserPos.ZERO);
+ SqlLiteral cutoffNode;
+ if (timeFieldSpec.getDataType().isNumeric()) {
+ cutoffNode = SqlLiteral.createExactNumeric(formattedCutoffTime,
SqlParserPos.ZERO);
+ } else {
+ cutoffNode = SqlLiteral.createCharString(formattedCutoffTime,
SqlParserPos.ZERO);
+ }
+
+ SqlBasicCall rangeFilter = new SqlBasicCall(
+ SqlStdOperatorTable.GREATER_THAN_OR_EQUAL, List.of(timeColNode,
cutoffNode),
+ SqlParserPos.ZERO);
+
+ SqlNode existingWhere = sqlSelect.getWhere();
+ if (existingWhere != null) {
+ //add an AND if the where exists
+ SqlBasicCall andExpr = new SqlBasicCall(
+ SqlStdOperatorTable.AND,
+ List.of(existingWhere, rangeFilter),
+ SqlParserPos.ZERO
+ );
+ sqlSelect.setWhere(andExpr);
+ } else {
+ sqlSelect.setWhere(rangeFilter);
+ }
+ LOGGER.debug("Injected Calcite AST filter for skipOutOfRetentionValues
on table: {}. Cutoff: {}", rawTableName,
+ formattedCutoffTime);
+ } catch (RuntimeException e) {
+ throw new IllegalStateException("Failed to apply
skipOutOfRetentionValues on table: " + rawTableName, e);
Review Comment:
wouldnt it be better to be more explicit rather than silently defaulting?
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