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June 28, 2017 19:11
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Reproducing orphan blobstore
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@Test | |
public void testOrphanBlobStore() throws Exception { | |
int instances = 2; | |
long cleanupInterval = 1000l; | |
BlobClient blobClient = null; | |
BlobStoreService blobStoreService = null; | |
BlobServer[] blobServers = new BlobServer[instances]; | |
BlobLibraryCacheManager[] managers = new BlobLibraryCacheManager[instances]; | |
InetSocketAddress[] addresses = new InetSocketAddress[instances]; | |
Random random = new Random(); | |
try { | |
final Configuration config = new Configuration(); | |
config.setString(HighAvailabilityOptions.HA_MODE, "ZOOKEEPER"); | |
config.setString(CoreOptions.STATE_BACKEND, "FILESYSTEM"); | |
config.setString(HighAvailabilityOptions.HA_STORAGE_PATH, | |
temporaryFolder.getRoot().getPath() + "/tmp-data"); | |
blobStoreService = BlobUtils.createBlobStoreFromConfig(config); | |
for (int i = 0; i < instances; i++) { | |
blobServers[i] = new BlobServer(config, blobStoreService); | |
addresses[i] = new InetSocketAddress("0.0.0.0", blobServers[i].getPort()); | |
managers[i] = new BlobLibraryCacheManager(blobServers[i], cleanupInterval); | |
} | |
blobClient = new BlobClient(addresses[0], config); | |
byte[] blob_1 = new byte[1024]; | |
byte[] blob_2 = new byte[1024]; | |
random.nextBytes(blob_1); | |
random.nextBytes(blob_2); | |
BlobKey key_1 = blobClient.put(blob_1); | |
BlobKey key_2 = blobClient.put(blob_2); | |
List<BlobKey> orphans = new ArrayList<>(); | |
orphans.add(key_1); | |
orphans.add(key_2); | |
JobID jobOrphan = new JobID(); | |
managers[0].registerJob(jobOrphan, orphans, Collections.<URL>emptyList()); | |
assertTrue(managers[0].getFile(key_1).exists()); | |
assertTrue(managers[0].getFile(key_2).exists()); | |
assertTrue(managers[1].getFile(key_1).exists()); | |
assertTrue(managers[1].getFile(key_2).exists()); | |
// server restarted and manager recovered to another server | |
blobServers[0] = new BlobServer(config, blobStoreService); | |
managers[0] = new BlobLibraryCacheManager(blobServers[1], cleanupInterval); | |
byte[] blob_3 = new byte[1024]; | |
random.nextBytes(blob_3); | |
BlobKey key_3 = blobClient.put(blob_3); | |
List<BlobKey> blobs = new ArrayList<>(); | |
blobs.add(key_3); | |
JobID job = new JobID(); | |
managers[0].registerJob(job, blobs, Collections.<URL>emptyList()); | |
/** | |
* BlobLibraryCacheManager#getNumberOfReferencesByKey was implemeted | |
* to check if there are reference count equals to 0 and there are | |
* blobKey. | |
*/ | |
assertTrue(managers[0].getFile(key_1).exists()); | |
assertTrue(managers[0].getNumberOfReferencesByKey(key_1) == 0); | |
assertTrue(managers[0].getFile(key_2).exists()); | |
assertTrue(managers[0].getNumberOfReferencesByKey(key_2) == 0); | |
assertTrue(managers[0].getFile(key_3).exists()); | |
assertTrue(managers[0].getNumberOfReferencesByKey(key_3) == 1); | |
managers[0].unregisterJob(jobOrphan); | |
managers[0].unregisterJob(job); | |
// Cleaning up | |
Thread.sleep(cleanupInterval + 1); | |
// Checking orphan references | |
//---------------------------------------------------------------------- | |
assertTrue(managers[0].getNumberOfReferencesByKey(key_1) == 0); | |
assertTrue(managers[0].getFile(key_1).exists()); | |
assertTrue(managers[0].getNumberOfReferencesByKey(key_2) == 0); | |
assertTrue(managers[0].getFile(key_2).exists()); | |
//---------------------------------------------------------------------- | |
int fileNotFound = 0; | |
try { | |
assertTrue(managers[0].getNumberOfReferencesByKey(key_3) == 0); | |
managers[0].getFile(key_3).exists(); | |
} catch (IOException ex) { | |
fileNotFound++; | |
} | |
// File not found, was removed correctly by cleanup | |
assertEquals(1, fileNotFound); | |
// Checking files after cleanup. This files should be re-register | |
assertTrue(managers[0].getFile(key_1).exists()); | |
assertTrue(managers[0].getFile(key_2).exists()); | |
} finally { | |
if (blobClient != null && !blobClient.isClosed()) { | |
blobClient.close(); | |
} | |
for (BlobServer bs : blobServers) { | |
if (bs != null && !bs.isShutdown()) { | |
bs.close(); | |
} | |
} | |
for (BlobLibraryCacheManager blcm : managers) { | |
if (blcm != null) { | |
blcm.shutdown(); | |
} | |
} | |
if (blobStoreService != null) { | |
blobStoreService.closeAndCleanupAllData(); | |
} | |
} | |
} |
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