jt2594838 commented on code in PR #16048:
URL: https://github.com/apache/iotdb/pull/16048#discussion_r2238138913
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iotdb-core/datanode/src/main/java/org/apache/iotdb/db/storageengine/dataregion/compaction/selector/estimator/AbstractCompactionEstimator.java:
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@@ -100,30 +132,37 @@ private FileInfo getFileInfoFromCache(TsFileResource
resource) throws IOExceptio
if (fileInfoCache.containsKey(resource)) {
return fileInfoCache.get(resource);
}
- File file = new File(resource.getTsFilePath());
+ TsFileID tsFileID = resource.getTsFileID();
synchronized (globalFileInfoCacheForFailedCompaction) {
- if (globalFileInfoCacheForFailedCompaction.containsKey(file)) {
- FileInfo fileInfo = globalFileInfoCacheForFailedCompaction.get(file);
+ FileInfo fileInfo = globalFileInfoCacheForFailedCompaction.get(tsFileID);
+ if (fileInfo != null) {
fileInfoCache.put(resource, fileInfo);
return fileInfo;
}
}
try (TsFileSequenceReader reader = getReader(resource.getTsFilePath())) {
FileInfo fileInfo = CompactionEstimateUtils.calculateFileInfo(reader);
fileInfoCache.put(resource, fileInfo);
- synchronized (globalFileInfoCacheForFailedCompaction) {
- globalFileInfoCacheForFailedCompaction.put(file, fileInfo);
+ if (globalFileInfoCacheEnabled) {
+ synchronized (globalFileInfoCacheForFailedCompaction) {
+ globalFileInfoCacheForFailedCompaction.put(tsFileID, fileInfo);
+ }
+ synchronized (globalRoughInfoCacheForCompaction) {
+ globalRoughInfoCacheForCompaction.put(tsFileID,
fileInfo.getSimpleFileInfo());
+ }
Review Comment:
Now that you have used `Collections.synchronizedMap()`, I suppose that it is
unnecessary to add another synchronization.
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