public void testUpdateManySmallRecords() throws IOException {
final int records = 10000;
long seed = System.currentTimeMillis();
MersenneTwisterFast mersenneTwisterFast = new MersenneTwisterFast(seed);
System.out.println("testUpdateManySmallRecords seed : " + seed);
Map<OClusterPosition, byte[]> positionRecordMap = new HashMap<OClusterPosition, byte[]>();
Set<OClusterPosition> updatedPositions = new HashSet<OClusterPosition>();
ORecordVersion recordVersion = OVersionFactory.instance().createVersion();
recordVersion.increment();
recordVersion.increment();
for (int i = 0; i < records; i++) {
int recordSize = mersenneTwisterFast.nextInt(OClusterPage.MAX_RECORD_SIZE - 1) + 1;
byte[] smallRecord = new byte[recordSize];
mersenneTwisterFast.nextBytes(smallRecord);
final OPhysicalPosition physicalPosition = paginatedCluster.createRecord(smallRecord, recordVersion, (byte) 2);
positionRecordMap.put(physicalPosition.clusterPosition, smallRecord);
}
ORecordVersion newRecordVersion = OVersionFactory.instance().createVersion();
newRecordVersion.copyFrom(recordVersion);
newRecordVersion.increment();
for (OClusterPosition clusterPosition : positionRecordMap.keySet()) {
if (mersenneTwisterFast.nextBoolean()) {
int recordSize = mersenneTwisterFast.nextInt(OClusterPage.MAX_RECORD_SIZE - 1) + 1;
byte[] smallRecord = new byte[recordSize];
mersenneTwisterFast.nextBytes(smallRecord);
paginatedCluster.updateRecord(clusterPosition, smallRecord, newRecordVersion, (byte) 3);
positionRecordMap.put(clusterPosition, smallRecord);
updatedPositions.add(clusterPosition);
}
}
for (Map.Entry<OClusterPosition, byte[]> entry : positionRecordMap.entrySet()) {
ORawBuffer rawBuffer = paginatedCluster.readRecord(entry.getKey());
Assert.assertNotNull(rawBuffer);
Assert.assertEquals(rawBuffer.buffer, entry.getValue());
if (updatedPositions.contains(entry.getKey())) {
Assert.assertEquals(rawBuffer.version, newRecordVersion);
Assert.assertEquals(rawBuffer.recordType, 3);
} else {
Assert.assertEquals(rawBuffer.version, recordVersion);
Assert.assertEquals(rawBuffer.recordType, 2);
}
}
}
