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morningman pushed a commit to branch branch-3.0
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The following commit(s) were added to refs/heads/branch-3.0 by this push:
new 984b47d9b12 branch-3.0: [fix](external) fix count(*) performance
fallback in external table query #44172 (#44193)
984b47d9b12 is described below
commit 984b47d9b12b897f14c617a2020824e5e63de914
Author: github-actions[bot]
<41898282+github-actions[bot]@users.noreply.github.com>
AuthorDate: Mon Nov 18 20:34:39 2024 +0800
branch-3.0: [fix](external) fix count(*) performance fallback in external
table query #44172 (#44193)
Cherry-picked from #44172
Co-authored-by: Mingyu Chen (Rayner) <morning...@163.com>
---
.../main/java/org/apache/doris/datasource/FileQueryScanNode.java | 3 +++
.../src/main/java/org/apache/doris/planner/OlapScanNode.java | 7 -------
fe/fe-core/src/main/java/org/apache/doris/planner/ScanNode.java | 7 ++++++-
3 files changed, 9 insertions(+), 8 deletions(-)
diff --git
a/fe/fe-core/src/main/java/org/apache/doris/datasource/FileQueryScanNode.java
b/fe/fe-core/src/main/java/org/apache/doris/datasource/FileQueryScanNode.java
index e75e2d144ef..b1cd799d5c4 100644
---
a/fe/fe-core/src/main/java/org/apache/doris/datasource/FileQueryScanNode.java
+++
b/fe/fe-core/src/main/java/org/apache/doris/datasource/FileQueryScanNode.java
@@ -297,6 +297,7 @@ public abstract class FileQueryScanNode extends
FileScanNode {
location.setServer(new TNetworkAddress(backend.getHost(),
backend.getBePort()));
curLocations.addToLocations(location);
scanRangeLocations.add(curLocations);
+ scanBackendIds.add(backendId);
return;
}
}
@@ -346,6 +347,7 @@ public abstract class FileQueryScanNode extends
FileScanNode {
// However, even one ScanNode instance can provide maximum
scanning concurrency.
scanRangeLocations.add(curLocations);
setLocationPropertiesIfNecessary(backend, locationType,
locationProperties);
+ scanBackendIds.add(backend.getId());
}
} else {
List<Split> inputSplits = getSplits();
@@ -363,6 +365,7 @@ public abstract class FileQueryScanNode extends
FileScanNode {
scanRangeLocations.add(splitToScanRange(backend,
locationProperties, split, pathPartitionKeys));
totalFileSize += split.getLength();
}
+ scanBackendIds.add(backend.getId());
}
}
diff --git
a/fe/fe-core/src/main/java/org/apache/doris/planner/OlapScanNode.java
b/fe/fe-core/src/main/java/org/apache/doris/planner/OlapScanNode.java
index afdffc748c0..41c055062e3 100644
--- a/fe/fe-core/src/main/java/org/apache/doris/planner/OlapScanNode.java
+++ b/fe/fe-core/src/main/java/org/apache/doris/planner/OlapScanNode.java
@@ -192,8 +192,6 @@ public class OlapScanNode extends ScanNode {
private Set<Long> sampleTabletIds = Sets.newHashSet();
private TableSample tableSample;
- private HashSet<Long> scanBackendIds = new HashSet<>();
-
private Map<Long, Integer> tabletId2BucketSeq = Maps.newHashMap();
// a bucket seq may map to many tablets, and each tablet has a
// TScanRangeLocations.
@@ -1919,9 +1917,4 @@ public class OlapScanNode extends ScanNode {
public int getScanRangeNum() {
return getScanTabletIds().size();
}
-
- @Override
- public int numScanBackends() {
- return scanBackendIds.size();
- }
}
diff --git a/fe/fe-core/src/main/java/org/apache/doris/planner/ScanNode.java
b/fe/fe-core/src/main/java/org/apache/doris/planner/ScanNode.java
index b392075be9b..7a36fbb3b04 100644
--- a/fe/fe-core/src/main/java/org/apache/doris/planner/ScanNode.java
+++ b/fe/fe-core/src/main/java/org/apache/doris/planner/ScanNode.java
@@ -110,6 +110,11 @@ public abstract class ScanNode extends PlanNode implements
SplitGenerator {
protected TableSnapshot tableSnapshot;
+ // Save the id of backends which this scan node will be executed on.
+ // This is also important for local shuffle logic.
+ // Now only OlapScanNode and FileQueryScanNode implement this.
+ protected HashSet<Long> scanBackendIds = new HashSet<>();
+
public ScanNode(PlanNodeId id, TupleDescriptor desc, String planNodeName,
StatisticalType statisticalType) {
super(id, desc.getId().asList(), planNodeName, statisticalType);
this.desc = desc;
@@ -731,7 +736,7 @@ public abstract class ScanNode extends PlanNode implements
SplitGenerator {
}
public int numScanBackends() {
- return 0;
+ return scanBackendIds.size();
}
public int getScanRangeNum() {
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