Remove objects before optimization from DfsGarbageCollector
Just counting objects is not sufficient. There are some race conditions with receive packs and delta base completion that may confuse such a simple algorithm. Instead always do the larger set computations, and rely on the PackWriter having no objects pending as the way to avoid creating an empty pack file. Change-Id: Ic81fefb158ed6ef8d6522062f2be0338a49f6bc4
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@ -100,12 +100,6 @@ public class DfsGarbageCollector {
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private Set<ObjectId> nonHeads;
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/** Sum of object counts in {@link #packsBefore}. */
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private long objectsBefore;
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/** Sum of object counts iN {@link #newPackDesc}. */
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private long objectsPacked;
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private Set<ObjectId> tagTargets;
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/**
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@ -288,7 +282,7 @@ private void packHeads(ProgressMonitor pm) throws IOException {
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}
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private void packRest(ProgressMonitor pm) throws IOException {
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if (nonHeads.isEmpty() || objectsPacked == getObjectsBefore())
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if (nonHeads.isEmpty())
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return;
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PackWriter pw = newPackWriter();
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@ -304,14 +298,11 @@ private void packRest(ProgressMonitor pm) throws IOException {
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}
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private void packGarbage(ProgressMonitor pm) throws IOException {
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if (objectsPacked == getObjectsBefore())
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return;
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// TODO(sop) This is ugly. The garbage pack needs to be deleted.
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PackWriter pw = newPackWriter();
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try {
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RevWalk pool = new RevWalk(ctx);
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pm.beginTask("Finding garbage", (int) getObjectsBefore());
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pm.beginTask("Finding garbage", objectsBefore());
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for (DfsPackFile oldPack : packsBefore) {
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PackIndex oldIdx = oldPack.getPackIndex(ctx);
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for (PackIndex.MutableEntry ent : oldIdx) {
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@ -343,12 +334,11 @@ private static boolean isHead(Ref ref) {
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return ref.getName().startsWith(Constants.R_HEADS);
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}
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private long getObjectsBefore() {
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if (objectsBefore == 0) {
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for (DfsPackFile p : packsBefore)
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objectsBefore += p.getPackDescription().getObjectCount();
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}
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return objectsBefore;
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private int objectsBefore() {
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int cnt = 0;
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for (DfsPackFile p : packsBefore)
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cnt += p.getPackDescription().getObjectCount();
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return cnt;
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}
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private PackWriter newPackWriter() {
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@ -403,7 +393,6 @@ public boolean contains(AnyObjectId objectId) {
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PackWriter.Statistics stats = pw.getStatistics();
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pack.setPackStats(stats);
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objectsPacked += stats.getTotalObjects();
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newPackStats.add(stats);
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DfsBlockCache.getInstance().getOrCreate(pack, null);
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