vdiravka commented on a change in pull request #1466: DRILL-6381: Add support for index based planning and execution URL: https://github.com/apache/drill/pull/1466#discussion_r223651337
########## File path: contrib/format-maprdb/src/main/java/org/apache/drill/exec/store/mapr/db/json/JsonTableGroupScan.java ########## @@ -179,16 +295,126 @@ public MapRDBSubScan getSpecificScan(int minorFragmentId) { assert minorFragmentId < endpointFragmentMapping.size() : String.format( "Mappings length [%d] should be greater than minor fragment id [%d] but it isn't.", endpointFragmentMapping.size(), minorFragmentId); - return new MapRDBSubScan(getUserName(), formatPlugin, endpointFragmentMapping.get(minorFragmentId), columns, TABLE_JSON); + return new MapRDBSubScan(getUserName(), formatPlugin, endpointFragmentMapping.get(minorFragmentId), columns, maxRecordsToRead, TABLE_JSON); } @Override public ScanStats getScanStats() { - //TODO: look at stats for this. - long rowCount = (long) ((scanSpec.getSerializedFilter() != null ? .5 : 1) * totalRowCount); - int avgColumnSize = 10; - int numColumns = (columns == null || columns.isEmpty()) ? 100 : columns.size(); - return new ScanStats(GroupScanProperty.NO_EXACT_ROW_COUNT, rowCount, 1, avgColumnSize * numColumns * rowCount); + if (isIndexScan()) { + return indexScanStats(); + } + return fullTableScanStats(); + } + + private ScanStats fullTableScanStats() { + PluginCost pluginCostModel = formatPlugin.getPluginCostModel(); + final int avgColumnSize = pluginCostModel.getAverageColumnSize(this); + final int numColumns = (columns == null || columns.isEmpty()) ? STAR_COLS : columns.size(); + // index will be NULL for FTS + double rowCount = stats.getRowCount(scanSpec.getCondition(), null); + // rowcount based on _id predicate. If NO _id predicate present in condition, then the + // rowcount should be same as totalRowCount. Equality b/w the two rowcounts should not be + // construed as NO _id predicate since stats are approximate. + double leadingRowCount = stats.getLeadingRowCount(scanSpec.getCondition(), null); + double avgRowSize = stats.getAvgRowSize(null, true); + double totalRowCount = stats.getRowCount(null, null); + logger.debug("GroupScan {} with stats {}: rowCount={}, condition={}, totalRowCount={}, fullTableRowCount={}", + System.identityHashCode(this), System.identityHashCode(stats), rowCount, + scanSpec.getCondition()==null?"null":scanSpec.getCondition(), Review comment: formatting ---------------------------------------------------------------- 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