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HBASE-21355 (addendum) replace the expensive reload storefiles with reading the merge result of compacted storefiles and current storefiles

This commit is contained in:
huzheng 2018-10-22 15:17:32 +08:00
parent 3b66b65b9f
commit d0e7367c8d
1 changed files with 12 additions and 18 deletions
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30
hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/HStore.java
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@ -303,6 +303,10 @@ public class HStore implements Store, HeapSize, StoreConfigInformation, Propagat
this.storeEngine = createStoreEngine(this, this.conf, this.comparator);
List<HStoreFile> hStoreFiles = loadStoreFiles();
// Move the storeSize calculation out of loadStoreFiles() method, because the secondary read
// replica's refreshStoreFiles() will also use loadStoreFiles() to refresh its store files and
// update the storeSize in the completeCompaction(..) finally (just like compaction) , so
// no need calculate the storeSize twice.
this.storeSize.addAndGet(getStorefilesSize(hStoreFiles, sf -> true));
this.totalUncompressedBytes.addAndGet(getTotalUmcompressedBytes(hStoreFiles));
this.storeEngine.getStoreFileManager().loadFiles(hStoreFiles);
@ -1705,26 +1709,16 @@ public class HStore implements Store, HeapSize, StoreConfigInformation, Propagat
@Override
public boolean hasReferences() {
List<HStoreFile> reloadedStoreFiles = null;
// Grab the read lock here, because we need to ensure that: only when the atomic
// replaceStoreFiles(..) finished, we can get all the complete store file list.
this.lock.readLock().lock();
try {
// Reloading the store files from file system due to HBASE-20940. As split can happen with an
// region which has references
reloadedStoreFiles = loadStoreFiles();
return StoreUtils.hasReferences(reloadedStoreFiles);
} catch (IOException ioe) {
LOG.error("Error trying to determine if store has references, assuming references exists",
ioe);
return true;
// Merge the current store files with compacted files here due to HBASE-20940.
Collection<HStoreFile> allStoreFiles = new ArrayList<>(getStorefiles());
allStoreFiles.addAll(getCompactedFiles());
return StoreUtils.hasReferences(allStoreFiles);
} finally {
if (reloadedStoreFiles != null) {
for (HStoreFile storeFile : reloadedStoreFiles) {
try {
storeFile.closeStoreFile(false);
} catch (IOException ioe) {
LOG.warn("Encountered exception closing " + storeFile + ": " + ioe.getMessage());
// continue with closing the remaining store files
}
}
}
this.lock.readLock().unlock();
}
}