コード例 #1
0
  void flushLedgerEntries(long l, List<LedgerEntryPage> entries) throws IOException {
    FileInfo fi = null;
    try {
      Collections.sort(
          entries,
          new Comparator<LedgerEntryPage>() {
            @Override
            public int compare(LedgerEntryPage o1, LedgerEntryPage o2) {
              return (int) (o1.getFirstEntry() - o2.getFirstEntry());
            }
          });
      int[] versions = new int[entries.size()];
      try {
        fi = getFileInfo(l, null);
      } catch (Bookie.NoLedgerException nle) {
        // ledger has been deleted
        LOG.info("No ledger {} found when flushing entries.", l);
        return;
      }

      // flush the header if necessary
      relocateIndexFileAndFlushHeader(l, fi);
      int start = 0;
      long lastOffset = -1;
      for (int i = 0; i < entries.size(); i++) {
        versions[i] = entries.get(i).getVersion();
        if (lastOffset != -1 && (entries.get(i).getFirstEntry() - lastOffset) != entriesPerPage) {
          // send up a sequential list
          int count = i - start;
          if (count == 0) {
            LOG.warn("Count cannot possibly be zero!");
          }
          writeBuffers(l, entries, fi, start, count);
          start = i;
        }
        lastOffset = entries.get(i).getFirstEntry();
      }
      if (entries.size() - start == 0 && entries.size() != 0) {
        LOG.warn("Nothing to write, but there were entries!");
      }
      writeBuffers(l, entries, fi, start, entries.size() - start);
      for (int i = 0; i < entries.size(); i++) {
        LedgerEntryPage lep = entries.get(i);
        lep.setClean(versions[i]);
      }
      if (LOG.isDebugEnabled()) {
        LOG.debug("Flushed ledger {} with {} pages.", l, entries.size());
      }
    } finally {
      if (fi != null) {
        fi.release();
      }
    }
  }
コード例 #2
0
 void flushLedgerHeader(long ledger) throws IOException {
   FileInfo fi = null;
   try {
     fi = getFileInfo(ledger, null);
     relocateIndexFileAndFlushHeader(ledger, fi);
   } catch (Bookie.NoLedgerException nle) {
     // ledger has been deleted
     LOG.info("No ledger {} found when flushing header.", ledger);
     return;
   } finally {
     if (null != fi) {
       fi.release();
     }
   }
 }