sonatype-lift[bot] commented on a change in pull request #179:
URL: https://github.com/apache/lucene/pull/179#discussion_r697042596
##########
File path:
lucene/facet/src/java/org/apache/lucene/facet/taxonomy/directory/DirectoryTaxonomyReader.java
##########
@@ -351,12 +348,140 @@ public FacetLabel getPath(int ordinal) throws
IOException {
}
synchronized (categoryCache) {
- categoryCache.put(catIDInteger, ret);
+ categoryCache.put(ordinal, ret);
}
return ret;
}
+ private FacetLabel[] getPathFromCache(int... ordinals) {
+ FacetLabel[] facetLabels = new FacetLabel[ordinals.length];
+ // TODO LUCENE-10068: can we use an int-based hash impl, such as
IntToObjectMap,
+ // wrapped as LRU?
+ synchronized (categoryCache) {
+ for (int i = 0; i < ordinals.length; i++) {
+ facetLabels[i] = categoryCache.get(ordinals[i]);
+ }
+ }
+ return facetLabels;
+ }
+
+ /**
+ * Checks if the ordinals in the array are >=0 and < {@code
+ * DirectoryTaxonomyReader#indexReader.maxDoc()}
+ *
+ * @param ordinals Integer array of ordinals
+ * @throws IllegalArgumentException Throw an IllegalArgumentException if one
of the ordinals is
+ * out of bounds
+ */
+ private void checkOrdinalBounds(int... ordinals) throws
IllegalArgumentException {
+ for (int ordinal : ordinals) {
+ if (ordinal < 0 || ordinal >= indexReader.maxDoc()) {
+ throw new IllegalArgumentException(
+ "ordinal "
+ + ordinal
+ + " is out of the range of the indexReader "
+ + indexReader.toString()
+ + ". The maximum possible ordinal number is "
+ + (indexReader.maxDoc() - 1));
+ }
+ }
+ }
+
+ /**
+ * Returns an array of FacetLabels for a given array of ordinals.
+ *
+ * <p>This API is generally faster than iteratively calling {@link
#getPath(int)} over an array of
+ * ordinals. It uses the {@link #getPath(int)} method iteratively when it
detects that the index
+ * was created using StoredFields (with no performance gains) and uses
DocValues based iteration
+ * when the index is based on BinaryDocValues. Lucene switched to
BinaryDocValues in version 9.0
+ *
+ * @param ordinals Array of ordinals that are assigned to categories
inserted into the taxonomy
+ * index
+ */
+ @Override
+ public FacetLabel[] getBulkPath(int... ordinals) throws IOException {
+ ensureOpen();
+ checkOrdinalBounds(ordinals);
+
+ int ordinalsLength = ordinals.length;
+ FacetLabel[] bulkPath = new FacetLabel[ordinalsLength];
+ // remember the original positions of ordinals before they are sorted
+ int[] originalPosition = new int[ordinalsLength];
+ Arrays.setAll(originalPosition, IntUnaryOperator.identity());
+
+ getPathFromCache(ordinals);
Review comment:
*THREAD_SAFETY_VIOLATION:* Read/Write race. Non-private method
`DirectoryTaxonomyReader.getBulkPath(...)` indirectly reads without
synchronization from `this.categoryCache`. Potentially races with write in
method `DirectoryTaxonomyReader.doClose()`.
Reporting because this access may occur on a background thread.
(at-me [in a reply](https://help.sonatype.com/lift) with `help` or `ignore`)
##########
File path:
lucene/facet/src/java/org/apache/lucene/facet/taxonomy/directory/DirectoryTaxonomyReader.java
##########
@@ -318,23 +322,16 @@ public FacetLabel getPath(int ordinal) throws IOException
{
// doOpenIfChanged, we need to ensure that the ordinal is one that this DTR
// instance recognizes. Therefore we do this check up front, before we hit
// the cache.
- if (ordinal < 0 || ordinal >= indexReader.maxDoc()) {
- return null;
- }
+ checkOrdinalBounds(ordinal);
- // TODO: can we use an int-based hash impl, such as IntToObjectMap,
- // wrapped as LRU?
- Integer catIDInteger = Integer.valueOf(ordinal);
- synchronized (categoryCache) {
- FacetLabel res = categoryCache.get(catIDInteger);
- if (res != null) {
- return res;
- }
+ FacetLabel[] ordinalPath = getPathFromCache(ordinal);
Review comment:
*THREAD_SAFETY_VIOLATION:* Read/Write race. Non-private method
`DirectoryTaxonomyReader.getPath(...)` indirectly reads without synchronization
from `this.categoryCache`. Potentially races with write in method
`DirectoryTaxonomyReader.doClose()`.
Reporting because this access may occur on a background thread.
(at-me [in a reply](https://help.sonatype.com/lift) with `help` or `ignore`)
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