muse-dev[bot] commented on a change in pull request #2153:
URL: https://github.com/apache/lucene-solr/pull/2153#discussion_r551547661
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File path:
lucene/suggest/src/java/org/apache/lucene/search/suggest/fst/FSTCompletionLookup.java
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@@ -305,20 +298,25 @@ public synchronized boolean store(DataOutput output)
throws IOException {
@Override
public synchronized boolean load(DataInput input) throws IOException {
count = input.readVLong();
- this.higherWeightsCompletion = new FSTCompletion(new FST<>(
- input, input, NoOutputs.getSingleton()));
- this.normalCompletion = new FSTCompletion(
- higherWeightsCompletion.getFST(), false, exactMatchFirst);
+ this.higherWeightsCompletion =
+ new FSTCompletion(new FST<>(input, input, NoOutputs.getSingleton()));
+ this.normalCompletion =
+ new FSTCompletion(higherWeightsCompletion.getFST(), false,
exactMatchFirst);
return true;
}
@Override
public long ramBytesUsed() {
- long mem = RamUsageEstimator.shallowSizeOf(this) +
RamUsageEstimator.shallowSizeOf(normalCompletion) +
RamUsageEstimator.shallowSizeOf(higherWeightsCompletion);
+ long mem =
+ RamUsageEstimator.shallowSizeOf(this)
+ + RamUsageEstimator.shallowSizeOf(normalCompletion)
Review comment:
*THREAD_SAFETY_VIOLATION:* Read/Write race. Non-private method
`FSTCompletionLookup.ramBytesUsed()` reads without synchronization from
`this.normalCompletion`. Potentially races with write in method
`FSTCompletionLookup.load(...)`.
Reporting because another access to the same memory occurs on a background
thread, although this access may not.
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