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fix leak with files not cleaning up correctly

This commit is contained in:
fjy 2014-11-12 18:05:30 -08:00 committed by Xavier Léauté
parent 10b7ca9fa9
commit 3ef21bfc66
2 changed files with 49 additions and 14 deletions
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8
server/src/main/java/io/druid/segment/loading/MMappedQueryableIndexFactory.java
View File

@ -22,7 +22,6 @@ package io.druid.segment.loading;
import com.metamx.common.logger.Logger;
import io.druid.segment.IndexIO;
import io.druid.segment.QueryableIndex;
import org.apache.commons.io.FileUtils;
import java.io.File;
import java.io.IOException;
@ -40,13 +39,6 @@ public class MMappedQueryableIndexFactory implements QueryableIndexFactory
return IndexIO.loadIndex(parentDir);
}
catch (IOException e) {
log.warn(e, "Got exception!!!! Going to delete parentDir[%s]", parentDir);
try {
FileUtils.deleteDirectory(parentDir);
}
catch (IOException e2) {
log.error(e, "Problem deleting parentDir[%s]", parentDir);
}
throw new SegmentLoadingException(e, "%s", e.getMessage());
}
}

55
server/src/main/java/io/druid/segment/loading/OmniSegmentLoader.java
View File

@ -48,6 +48,8 @@ public class OmniSegmentLoader implements SegmentLoader
private final List<StorageLocation> locations;
private final Object lock = new Object();
@Inject
public OmniSegmentLoader(
Map<String, DataSegmentPuller> pullers,
@ -118,16 +120,35 @@ public class OmniSegmentLoader implements SegmentLoader
}
File storageDir = new File(loc.getPath(), DataSegmentPusherUtil.getStorageDir(segment));
if (!storageDir.mkdirs()) {
log.debug("Unable to make parent file[%s]", storageDir);
// We use a marker to prevent the case where a segment is downloaded, but before the download completes,
// the parent directories of the segment are removed
final File downloadStartMarker = new File(storageDir, "downloadStartMarker");
synchronized (lock) {
if (!storageDir.mkdirs()) {
log.debug("Unable to make parent file[%s]", storageDir);
}
try {
downloadStartMarker.createNewFile();
}
catch (IOException e) {
throw new SegmentLoadingException("Unable to create marker file for [%s]", storageDir);
}
}
getPuller(segment.getLoadSpec()).getSegmentFiles(segment, storageDir);
try {
FileUtils.deleteDirectory(downloadStartMarker);
}
catch (Exception e) {
throw new SegmentLoadingException("Unable to remove marker file for [%s]", storageDir);
}
loc.addSegment(segment);
retVal = storageDir;
}
else {
} else {
retVal = new File(loc.getPath(), DataSegmentPusherUtil.getStorageDir(segment));
}
@ -151,9 +172,10 @@ public class OmniSegmentLoader implements SegmentLoader
}
try {
// Druid creates folders of the form dataSource/interval/version/partitionNum.
// We need to clean up all these directories if they are all empty.
File cacheFile = new File(loc.getPath(), DataSegmentPusherUtil.getStorageDir(segment));
log.info("Deleting directory[%s]", cacheFile);
FileUtils.deleteDirectory(cacheFile);
cleanupCacheFiles(loc.getPath(), cacheFile);
loc.removeSegment(segment);
}
catch (IOException e) {
@ -172,4 +194,25 @@ public class OmniSegmentLoader implements SegmentLoader
return loader;
}
public void cleanupCacheFiles(File baseFile, File cacheFile) throws IOException
{
if (cacheFile.equals(baseFile)) {
return;
}
synchronized (lock) {
log.info("Deleting directory[%s]", cacheFile);
try {
FileUtils.deleteDirectory(cacheFile);
}
catch (Exception e) {
log.error("Unable to remove file[%s]", cacheFile);
}
}
if (cacheFile.getParentFile() != null && cacheFile.getParentFile().listFiles().length == 0) {
cleanupCacheFiles(baseFile, cacheFile.getParentFile());
}
}
}