bitblender commented on a change in pull request #1355: DRILL-6560: Enhanced the batch statistics logging enablement URL: https://github.com/apache/drill/pull/1355#discussion_r201807628
########## File path: exec/java-exec/src/main/java/org/apache/drill/exec/util/record/RecordBatchStats.java ########## @@ -100,6 +108,119 @@ private String getQueryId(FragmentContext _context) { } return "NA"; } + + private boolean isBatchStatsEnabledForOperator(FragmentContext context, OperatorContext oContext) { + // The configuration can select what operators should log batch statistics + final String statsLoggingOperator = context.getOptions().getString(ExecConstants.STATS_LOGGING_BATCH_OPERATOR_OPTION).toUpperCase(); + final String allOperatorsStr = "ALL"; + + // All operators are allowed to log batch statistics + if (allOperatorsStr.equals(statsLoggingOperator)) { + return true; + } + + // No, only a select few are allowed; syntax: operator-id-1,operator-id-2,.. + final String[] operators = statsLoggingOperator.split(","); + final String operatorId = oContext.getStats().getId().toUpperCase(); + + for (int idx = 0; idx < operators.length; idx++) { + // We use "contains" because the operator identifier is a composite string; e.g., 3:[PARQUET_ROW_GROUP_SCAN] + if (operatorId.contains(operators[idx])) { + return true; + } + } + + return false; + } + } + + /** + * @see {@link RecordBatchStats#logRecordBatchStats(String, RecordBatch, RecordBatchStatsContext)} + */ + public static void logRecordBatchStats(RecordBatch recordBatch, + RecordBatchStatsContext batchStatsContext) { + + logRecordBatchStats(null, recordBatch, batchStatsContext); + } + + /** + * Logs record batch statistics for the input record batch (logging happens only + * when record statistics logging is enabled). + * + * @param sourceId optional source identifier for scanners + * @param recordBatch a set of records + * @param batchStatsContext batch stats context object + */ + public static void logRecordBatchStats(String sourceId, Review comment: Also, in a mid-stream operator, how to do I print stats in a way that will allow one to distinguish between the incoming batch stats and the outgoing batch stats in the log file ? Should there be a *String msg* parameter to allow the caller to tag the output ? ---------------------------------------------------------------- This is an automated message from the Apache Git Service. To respond to the message, please log on GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: us...@infra.apache.org With regards, Apache Git Services