Examples with BASE_URL_PROP org.apache.solr.common.cloud.ZkStateReader.BASE_URL_PROP used on opensource projects

Example 1 with BASE_URL_PROP

use of org.apache.solr.common.cloud.ZkStateReader.BASE_URL_PROP in project lucene-solr by apache.

the class TestSolrCloudSnapshots method testSnapshots.

@Test
public void testSnapshots() throws Exception {
    CloudSolrClient solrClient = cluster.getSolrClient();
    String collectionName = "SolrCloudSnapshots";
    CollectionAdminRequest.Create create = CollectionAdminRequest.createCollection(collectionName, "conf1", NUM_SHARDS, NUM_REPLICAS);
    create.process(solrClient);
    int nDocs = BackupRestoreUtils.indexDocs(cluster.getSolrClient(), collectionName, docsSeed);
    BackupRestoreUtils.verifyDocs(nDocs, solrClient, collectionName);
    String commitName = TestUtil.randomSimpleString(random(), 1, 5);
    // Verify if snapshot creation works with replica failures.
    boolean replicaFailures = usually();
    Optional<String> stoppedCoreName = Optional.empty();
    if (replicaFailures) {
        // Here the assumption is that Solr will spread the replicas uniformly across nodes.
        // If this is not true for some reason, then we will need to add some logic to find a
        // node with a single replica.
        this.cluster.getRandomJetty(random()).stop();
        // Sleep a bit for allowing ZK watch to fire.
        Thread.sleep(5000);
        // Figure out if at-least one replica is "down".
        DocCollection collState = solrClient.getZkStateReader().getClusterState().getCollection(collectionName);
        for (Slice s : collState.getSlices()) {
            for (Replica replica : s.getReplicas()) {
                if (replica.getState() == State.DOWN) {
                    stoppedCoreName = Optional.of(replica.getCoreName());
                }
            }
        }
    }
    int expectedCoresWithSnapshot = stoppedCoreName.isPresent() ? (NUM_SHARDS * NUM_REPLICAS) - 1 : (NUM_SHARDS * NUM_REPLICAS);
    CollectionAdminRequest.CreateSnapshot createSnap = new CollectionAdminRequest.CreateSnapshot(collectionName, commitName);
    createSnap.process(solrClient);
    Collection<CollectionSnapshotMetaData> collectionSnaps = listCollectionSnapshots(solrClient, collectionName);
    assertEquals(1, collectionSnaps.size());
    CollectionSnapshotMetaData meta = collectionSnaps.iterator().next();
    assertEquals(commitName, meta.getName());
    assertEquals(CollectionSnapshotMetaData.SnapshotStatus.Successful, meta.getStatus());
    assertEquals(expectedCoresWithSnapshot, meta.getReplicaSnapshots().size());
    Map<String, CoreSnapshotMetaData> snapshotByCoreName = meta.getReplicaSnapshots().stream().collect(Collectors.toMap(CoreSnapshotMetaData::getCoreName, Function.identity()));
    DocCollection collectionState = solrClient.getZkStateReader().getClusterState().getCollection(collectionName);
    assertEquals(2, collectionState.getActiveSlices().size());
    for (Slice shard : collectionState.getActiveSlices()) {
        assertEquals(2, shard.getReplicas().size());
        for (Replica replica : shard.getReplicas()) {
            if (stoppedCoreName.isPresent() && stoppedCoreName.get().equals(replica.getCoreName())) {
                // We know that the snapshot is not created for this replica.
                continue;
            }
            String replicaBaseUrl = replica.getStr(BASE_URL_PROP);
            String coreName = replica.getStr(ZkStateReader.CORE_NAME_PROP);
            assertTrue(snapshotByCoreName.containsKey(coreName));
            CoreSnapshotMetaData coreSnapshot = snapshotByCoreName.get(coreName);
            try (SolrClient adminClient = getHttpSolrClient(replicaBaseUrl)) {
                Collection<SnapshotMetaData> snapshots = listCoreSnapshots(adminClient, coreName);
                Optional<SnapshotMetaData> metaData = snapshots.stream().filter(x -> commitName.equals(x.getName())).findFirst();
                assertTrue("Snapshot not created for core " + coreName, metaData.isPresent());
                assertEquals(coreSnapshot.getIndexDirPath(), metaData.get().getIndexDirPath());
                assertEquals(coreSnapshot.getGenerationNumber(), metaData.get().getGenerationNumber());
            }
        }
    }
    // Delete all documents.
    {
        solrClient.deleteByQuery(collectionName, "*:*");
        solrClient.commit(collectionName);
        BackupRestoreUtils.verifyDocs(0, solrClient, collectionName);
    }
    String backupLocation = createTempDir().toFile().getAbsolutePath();
    String backupName = "mytestbackup";
    String restoreCollectionName = collectionName + "_restored";
    //Create a backup using the earlier created snapshot.
    {
        CollectionAdminRequest.Backup backup = CollectionAdminRequest.backupCollection(collectionName, backupName).setLocation(backupLocation).setCommitName(commitName);
        if (random().nextBoolean()) {
            assertEquals(0, backup.process(solrClient).getStatus());
        } else {
            //async
            assertEquals(RequestStatusState.COMPLETED, backup.processAndWait(solrClient, 30));
        }
    }
    // Restore backup.
    {
        CollectionAdminRequest.Restore restore = CollectionAdminRequest.restoreCollection(restoreCollectionName, backupName).setLocation(backupLocation);
        if (replicaFailures) {
            // In this case one of the Solr servers would be down. Hence we need to increase
            // max_shards_per_node property for restore command to succeed.
            restore.setMaxShardsPerNode(2);
        }
        if (random().nextBoolean()) {
            assertEquals(0, restore.process(solrClient).getStatus());
        } else {
            //async
            assertEquals(RequestStatusState.COMPLETED, restore.processAndWait(solrClient, 30));
        }
        AbstractDistribZkTestBase.waitForRecoveriesToFinish(restoreCollectionName, cluster.getSolrClient().getZkStateReader(), log.isDebugEnabled(), true, 30);
        BackupRestoreUtils.verifyDocs(nDocs, solrClient, restoreCollectionName);
    }
    // Verify if the snapshot deletion works correctly when one or more replicas containing the snapshot are
    // deleted
    boolean replicaDeletion = rarely();
    if (replicaDeletion) {
        CoreSnapshotMetaData replicaToDelete = null;
        for (String shardId : meta.getShards()) {
            List<CoreSnapshotMetaData> replicas = meta.getReplicaSnapshotsForShard(shardId);
            if (replicas.size() > 1) {
                int r_index = random().nextInt(replicas.size());
                replicaToDelete = replicas.get(r_index);
            }
        }
        if (replicaToDelete != null) {
            collectionState = solrClient.getZkStateReader().getClusterState().getCollection(collectionName);
            for (Slice s : collectionState.getSlices()) {
                for (Replica r : s.getReplicas()) {
                    if (r.getCoreName().equals(replicaToDelete.getCoreName())) {
                        log.info("Deleting replica {}", r);
                        CollectionAdminRequest.DeleteReplica delReplica = CollectionAdminRequest.deleteReplica(collectionName, replicaToDelete.getShardId(), r.getName());
                        delReplica.process(solrClient);
                        // The replica deletion will cleanup the snapshot meta-data.
                        snapshotByCoreName.remove(r.getCoreName());
                        break;
                    }
                }
            }
        }
    }
    // Delete snapshot
    CollectionAdminRequest.DeleteSnapshot deleteSnap = new CollectionAdminRequest.DeleteSnapshot(collectionName, commitName);
    deleteSnap.process(solrClient);
    // Wait for a while so that the clusterstate.json updates are propagated to the client side.
    Thread.sleep(2000);
    collectionState = solrClient.getZkStateReader().getClusterState().getCollection(collectionName);
    for (Slice shard : collectionState.getActiveSlices()) {
        for (Replica replica : shard.getReplicas()) {
            if (stoppedCoreName.isPresent() && stoppedCoreName.get().equals(replica.getCoreName())) {
                // We know that the snapshot was not created for this replica.
                continue;
            }
            String replicaBaseUrl = replica.getStr(BASE_URL_PROP);
            String coreName = replica.getStr(ZkStateReader.CORE_NAME_PROP);
            try (SolrClient adminClient = getHttpSolrClient(replicaBaseUrl)) {
                Collection<SnapshotMetaData> snapshots = listCoreSnapshots(adminClient, coreName);
                Optional<SnapshotMetaData> metaData = snapshots.stream().filter(x -> commitName.equals(x.getName())).findFirst();
                assertFalse("Snapshot not deleted for core " + coreName, metaData.isPresent());
                // Remove the entry for core if the snapshot is deleted successfully.
                snapshotByCoreName.remove(coreName);
            }
        }
    }
    // Verify all core-level snapshots are deleted.
    assertTrue("The cores remaining " + snapshotByCoreName, snapshotByCoreName.isEmpty());
    assertTrue(listCollectionSnapshots(solrClient, collectionName).isEmpty());
    // Verify if the collection deletion result in proper cleanup of snapshot metadata.
    {
        String commitName_2 = commitName + "_2";
        CollectionAdminRequest.CreateSnapshot createSnap_2 = new CollectionAdminRequest.CreateSnapshot(collectionName, commitName_2);
        assertEquals(0, createSnap_2.process(solrClient).getStatus());
        Collection<CollectionSnapshotMetaData> collectionSnaps_2 = listCollectionSnapshots(solrClient, collectionName);
        assertEquals(1, collectionSnaps.size());
        assertEquals(commitName_2, collectionSnaps_2.iterator().next().getName());
        // Delete collection
        CollectionAdminRequest.Delete deleteCol = CollectionAdminRequest.deleteCollection(collectionName);
        assertEquals(0, deleteCol.process(solrClient).getStatus());
        assertTrue(SolrSnapshotManager.listSnapshots(solrClient.getZkStateReader().getZkClient(), collectionName).isEmpty());
    }
}