dsmiley commented on code in PR #2960:
URL: https://github.com/apache/solr/pull/2960#discussion_r1926430030
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solr/core/src/java/org/apache/solr/search/QueryResult.java:
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@@ -22,6 +22,7 @@ public class QueryResult {
// Object for back compatibility so that we render true not "true" in json
private Object partialResults;
private Boolean segmentTerminatedEarly;
Review Comment:
thinking out loud: Perhaps we should do away with segmentTerminatedEarly as
overly specific
##########
solr/core/src/java/org/apache/solr/search/QueryCommand.java:
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@@ -194,7 +195,7 @@ public QueryCommand setNeedDocSet(boolean needDocSet) {
}
public boolean getTerminateEarly() {
- return (flags & SolrIndexSearcher.TERMINATE_EARLY) != 0;
+ return (flags & SolrIndexSearcher.TERMINATE_EARLY) != 0 || maxHits <
Integer.MAX_VALUE;
Review Comment:
When I see these other constants about TERMINATE_EARLY, this is what leads
me to think that maxHitsTerminateEarly is a good name.
##########
solr/core/src/java/org/apache/solr/response/SolrQueryResponse.java:
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@@ -68,6 +68,7 @@ public class SolrQueryResponse {
public static final String RESPONSE_HEADER_PARTIAL_RESULTS_DETAILS_KEY =
"partialResultsDetails";
public static final String RESPONSE_HEADER_SEGMENT_TERMINATED_EARLY_KEY =
"segmentTerminatedEarly";
+ public static final String RESPONSE_HEADER_TERMINATED_EARLY_KEY =
"terminatedEarly";
Review Comment:
Somewhere we need documentation to differentiate the meaning of this vs
partialResults. To me, this _implies_ partialResults at the least and it may
be redundant.
##########
solr/core/src/java/org/apache/solr/search/EarlyTerminatingCollector.java:
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@@ -29,11 +30,15 @@
*/
public class EarlyTerminatingCollector extends FilterCollector {
+ private final int chunkSize = 100; // Check across threads only at a chunk
size
+
private final int maxDocsToCollect;
private int numCollected = 0;
private int prevReaderCumulativeSize = 0;
private int currentReaderSize = 0;
+ private final AtomicInteger pendingDocsToCollect;
Review Comment:
LongAdder is likely a better choice for this use-case
##########
solr/core/src/java/org/apache/solr/search/MultiThreadedSearcher.java:
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@@ -255,7 +265,11 @@ public Object reduce(Collection collectors) throws
IOException {
for (Iterator var4 = collectors.iterator();
var4.hasNext();
maxScore = Math.max(maxScore, collector.getMaxScore())) {
- collector = (MaxScoreCollector) var4.next();
+ Collector next = (Collector) var4.next();
Review Comment:
could use a comment like "assume the next collector, except
EarlyTerminating, is the MaxScoreCollector".
While you are changing this code, please rename `var4` which is an
inexcusable variable name
##########
solr/core/src/java/org/apache/solr/search/SolrIndexSearcher.java:
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@@ -338,6 +339,11 @@ private Collector buildAndRunCollectorChain(
if (cmd.isQueryCancellable()) {
core.getCancellableQueryTracker().removeCancellableQuery(cmd.getQueryID());
}
+ if (collector instanceof final EarlyTerminatingCollector
earlyTerminatingCollector) {
Review Comment:
this check is brittle since it can only possibly true if the *last*
collector is earlyTerminatingCollector. We may add others or re-order at some
point. Also, can we just depend on the exception above and set
`qr.setTerminatedEarly(true);` there?
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