DataInputBuffer bufIn = new DataInputBuffer();
for (File file : clogs)
{
int bufferSize = (int)Math.min(file.length(), 32 * 1024 * 1024);
BufferedRandomAccessFile reader = new BufferedRandomAccessFile(file.getAbsolutePath(), "r", bufferSize);
final CommitLogHeader clHeader = readCommitLogHeader(reader);
/* seek to the lowest position where any CF has non-flushed data */
int lowPos = CommitLogHeader.getLowestPosition(clHeader);
if (lowPos == 0)
break;
reader.seek(lowPos);
if (logger_.isDebugEnabled())
logger_.debug("Replaying " + file + " starting at " + lowPos);
/* read the logs populate RowMutation and apply */
while (!reader.isEOF())
{
if (logger_.isDebugEnabled())
logger_.debug("Reading mutation at " + reader.getFilePointer());
byte[] bytes;
try
{
bytes = new byte[(int) reader.readLong()]; // readlong can throw EOFException too
reader.readFully(bytes);
}
catch (EOFException e)
{
// last CL entry didn't get completely written. that's ok.
break;
}
bufIn.reset(bytes, bytes.length);
/* read the commit log entry */
final RowMutation rm = RowMutation.serializer().deserialize(bufIn);
if (logger_.isDebugEnabled())
logger_.debug(String.format("replaying mutation for %s.%s: %s",
rm.getTable(),
rm.key(),
"{" + StringUtils.join(rm.getColumnFamilies(), ", ") + "}"));
final Table table = Table.open(rm.getTable());
tablesRecovered.add(table);
final Collection<ColumnFamily> columnFamilies = new ArrayList<ColumnFamily>(rm.getColumnFamilies());
final long entryLocation = reader.getFilePointer();
Runnable runnable = new Runnable()
{
public void run()
{
/* remove column families that have already been flushed before applying the rest */
for (ColumnFamily columnFamily : columnFamilies)
{
int id = table.getColumnFamilyId(columnFamily.name());
if (!clHeader.isDirty(id) || entryLocation < clHeader.getPosition(id))
{
rm.removeColumnFamily(columnFamily);
}
}
if (!rm.isEmpty())
{
try
{
table.applyNow(rm);
}
catch (IOException e)
{
throw new RuntimeException(e);
}
}
}
};
StageManager.getStage(StageManager.mutationStage_).execute(runnable);
rows++;
}
reader.close();
}
// wait for all the writes to finish on the mutation stage
while (StageManager.getStage(StageManager.mutationStage_).getCompletedTasks() < rows)
{