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Never throttle creation of compound files. (#12070) 

`ConcurrentMergeScheduler` uses the rate at which a merge writes bytes as a
proxy for CPU usage, in order to prevent merging from disrupting searches too
much. However creating compound files are lightweight CPU-wise and do not need
throttling.

Closes #12068
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Adrien Grand 2023-01-11 09:57:13 +01:00 committed by GitHub
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commit a8ef03d979
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3
lucene/CHANGES.txt
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@ -199,6 +199,9 @@ Improvements
* GITHUB#12034: Remove null check in IndexReaderContext#leaves() usages (Erik Pellizzon)
* GITHUB#12070: Compound file creation is no longer subject to merge throttling.
(Adrien Grand)
Bug Fixes
---------------------
* GITHUB#11726: Indexing term vectors on large documents could fail due to

5
lucene/core/src/java/org/apache/lucene/index/IndexWriter.java
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@ -5210,7 +5210,10 @@ public class IndexWriter
success = false;
Collection<String> filesToRemove = merge.info.files();
TrackingDirectoryWrapper trackingCFSDir = new TrackingDirectoryWrapper(mergeDirectory);
// NOTE: Creation of the CFS file must be performed with the original
// directory rather than with the merging directory, so that it is not
// subject to merge throttling.
TrackingDirectoryWrapper trackingCFSDir = new TrackingDirectoryWrapper(directory);
try {
createCompoundFile(
infoStream, trackingCFSDir, merge.info.info, context, this::deleteNewFiles);