Github user foryou2030 commented on a diff in the pull request: https://github.com/apache/incubator-carbondata/pull/123#discussion_r77506707 --- Diff: core/src/main/java/org/apache/carbondata/core/carbon/querystatistics/DriverQueryStatisticsRecorder.java --- @@ -78,106 +83,148 @@ public synchronized void recordStatisticsForDriver(QueryStatistic statistic, Str */ public void logStatisticsAsTableDriver() { synchronized (lock) { - String tableInfo = collectDriverStatistics(); - if (null != tableInfo) { - LOGGER.statistic(tableInfo); + Iterator<Map.Entry<String, List<QueryStatistic>>> entries = + queryStatisticsMap.entrySet().iterator(); + while (entries.hasNext()) { + Map.Entry<String, List<QueryStatistic>> entry = entries.next(); + String queryId = entry.getKey(); + // clear the unknown query statistics + if(StringUtils.isEmpty(queryId)) { + queryStatisticsMap.remove(queryId); --- End diff -- I tried this, but caused some exceptions
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