Examples with RecordUsageAnalyser org.apache.jackrabbit.oak.segment.RecordUsageAnalyser used on opensource projects

Example 1 with RecordUsageAnalyser

use of org.apache.jackrabbit.oak.segment.RecordUsageAnalyser in project jackrabbit-oak by apache.

the class DebugStore method debugFileStore.

private static void debugFileStore(ReadOnlyFileStore store) {
    Map<SegmentId, List<SegmentId>> idmap = Maps.newHashMap();
    int dataCount = 0;
    long dataSize = 0;
    int bulkCount = 0;
    long bulkSize = 0;
    RecordUsageAnalyser analyser = new RecordUsageAnalyser(store.getReader());
    for (SegmentId id : store.getSegmentIds()) {
        if (id.isDataSegmentId()) {
            Segment segment = id.getSegment();
            dataCount++;
            dataSize += segment.size();
            idmap.put(id, getReferencedSegmentIds(store, segment));
            analyseSegment(segment, analyser);
        } else if (id.isBulkSegmentId()) {
            bulkCount++;
            bulkSize += id.getSegment().size();
            idmap.put(id, Collections.<SegmentId>emptyList());
        }
    }
    System.out.println("Total size:");
    System.out.format("%s in %6d data segments%n", byteCountToDisplaySize(dataSize), dataCount);
    System.out.format("%s in %6d bulk segments%n", byteCountToDisplaySize(bulkSize), bulkCount);
    System.out.println(analyser.toString());
    Set<SegmentId> garbage = newHashSet(idmap.keySet());
    Queue<SegmentId> queue = Queues.newArrayDeque();
    queue.add(store.getRevisions().getHead().getSegmentId());
    while (!queue.isEmpty()) {
        SegmentId id = queue.remove();
        if (garbage.remove(id)) {
            queue.addAll(idmap.get(id));
        }
    }
    dataCount = 0;
    dataSize = 0;
    bulkCount = 0;
    bulkSize = 0;
    for (SegmentId id : garbage) {
        if (id.isDataSegmentId()) {
            dataCount++;
            dataSize += id.getSegment().size();
        } else if (id.isBulkSegmentId()) {
            bulkCount++;
            bulkSize += id.getSegment().size();
        }
    }
    System.out.format("%nAvailable for garbage collection:%n");
    System.out.format("%s in %6d data segments%n", byteCountToDisplaySize(dataSize), dataCount);
    System.out.format("%s in %6d bulk segments%n", byteCountToDisplaySize(bulkSize), bulkCount);
}