From 79d86301da49011eb01caa03c99e528b8f7e528c Mon Sep 17 00:00:00 2001
From: Johannes Mey <johannes.mey@tu-dresden.de>
Date: Thu, 7 Feb 2019 10:05:51 +0100
Subject: [PATCH] fix lookup time computation of direct/indirect access path;
add attribute stats debug message
---
.../inf/st/mquat/eris/coupling/ERISConnector.java | 12 +++++++++++-
1 file changed, 11 insertions(+), 1 deletion(-)
diff --git a/jastadd-mquat-eris/src/main/java/de/tudresden/inf/st/mquat/eris/coupling/ERISConnector.java b/jastadd-mquat-eris/src/main/java/de/tudresden/inf/st/mquat/eris/coupling/ERISConnector.java
index 4dcc9c2..d021fe1 100644
--- a/jastadd-mquat-eris/src/main/java/de/tudresden/inf/st/mquat/eris/coupling/ERISConnector.java
+++ b/jastadd-mquat-eris/src/main/java/de/tudresden/inf/st/mquat/eris/coupling/ERISConnector.java
@@ -296,14 +296,24 @@ public class ERISConnector {
// first prerequisite: there has to be a proposed index
if (currentIndexConfigs.containsKey(attribute)) {
+ ERISAttributeStatistics as = livingPartition.getAttributeStatistics(attribute);
+ logger.debug(" attribute {} stats: lookups: {} inserts: {} scans: {} links: {} count: {}",
+ attribute.getName(),
+ as.getLookups(),
+ as.getInserts(),
+ as.getScans(),
+ as.getLinks(),
+ as.getCount());
+
// get the proposed index
ERISLPConfiguration newIndexConfig = currentIndexConfigs.get(attribute);
// compute the missing component of the score for the index config
// get the lookup time
+ int count = livingPartition.getAttributeStatistics(attribute).getCount();
int lookupCount = livingPartition.getAttributeStatistics(attribute).getLookups();
- double lookupTime = newDOrOConfig.getAccessPath().getLookupTime(lookupCount);
+ double lookupTime = newDOrOConfig.getAccessPath().getLookupTime(count);
double indexScore = newIndexConfig.getEstimatedCost().orElse(Double.MAX_VALUE);
double lookupScoreWithoutIndex = lookupTime * lookupCount;
--
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