private void verifyWALCount(WALFactory wals, WAL log, int expected) throws Exception {
Path walPath = DefaultWALProvider.getCurrentFileName(log);
WAL.Reader reader = wals.createReader(FS, walPath);
int count = 0;
WAL.Entry entry = new WAL.Entry();
while (reader.next(entry) != null) count++;
reader.close();
assertEquals(expected, count);
}
/**
* Verify the content of the WAL file. Verify that the file has expected number of edits.
*
* @param wals may not be null
* @param wal
* @return Count of edits.
* @throws IOException
*/
private long verify(final WALFactory wals, final Path wal, final boolean verbose)
throws IOException {
WAL.Reader reader = wals.createReader(wal.getFileSystem(getConf()), wal);
long count = 0;
Map<String, Long> sequenceIds = new HashMap<String, Long>();
try {
while (true) {
WAL.Entry e = reader.next();
if (e == null) {
LOG.debug("Read count=" + count + " from " + wal);
break;
}
count++;
long seqid = e.getKey().getLogSeqNum();
if (sequenceIds.containsKey(Bytes.toString(e.getKey().getEncodedRegionName()))) {
// sequenceIds should be increasing for every regions
if (sequenceIds.get(Bytes.toString(e.getKey().getEncodedRegionName())) >= seqid) {
throw new IllegalStateException(
"wal = "
+ wal.getName()
+ ", "
+ "previous seqid = "
+ sequenceIds.get(Bytes.toString(e.getKey().getEncodedRegionName()))
+ ", current seqid = "
+ seqid);
}
}
// update the sequence Id.
sequenceIds.put(Bytes.toString(e.getKey().getEncodedRegionName()), seqid);
if (verbose) LOG.info("seqid=" + seqid);
}
} finally {
reader.close();
}
return count;
}