/**
* Test snapshotting a table that is online without flushing
*
* @throws Exception
*/
@Test
public void testSkipFlushTableSnapshot() throws Exception {
// make sure we don't fail on listing snapshots
SnapshotTestingUtils.assertNoSnapshots(admin);
// put some stuff in the table
Table table = UTIL.getConnection().getTable(TABLE_NAME);
UTIL.loadTable(table, TEST_FAM);
UTIL.flush(TABLE_NAME);
LOG.debug("FS state before snapshot:");
UTIL.getHBaseCluster().getMaster().getMasterFileSystem().logFileSystemState(LOG);
// take a snapshot of the enabled table
String snapshotString = "skipFlushTableSnapshot";
byte[] snapshot = Bytes.toBytes(snapshotString);
admin.snapshot(snapshotString, TABLE_NAME, SnapshotType.SKIPFLUSH);
LOG.debug("Snapshot completed.");
// make sure we have the snapshot
List<SnapshotDescription> snapshots =
SnapshotTestingUtils.assertOneSnapshotThatMatches(admin, snapshot, TABLE_NAME);
// make sure its a valid snapshot
LOG.debug("FS state after snapshot:");
UTIL.getHBaseCluster().getMaster().getMasterFileSystem().logFileSystemState(LOG);
SnapshotTestingUtils.confirmSnapshotValid(
UTIL, ProtobufUtil.createHBaseProtosSnapshotDesc(snapshots.get(0)), TABLE_NAME, TEST_FAM);
admin.deleteSnapshot(snapshot);
snapshots = admin.listSnapshots();
SnapshotTestingUtils.assertNoSnapshots(admin);
}
@Test
public void testSnapshotFailsOnNonExistantTable() throws Exception {
// make sure we don't fail on listing snapshots
SnapshotTestingUtils.assertNoSnapshots(admin);
TableName tableName = TableName.valueOf("_not_a_table");
// make sure the table doesn't exist
boolean fail = false;
do {
try {
admin.getTableDescriptor(tableName);
fail = true;
LOG.error("Table:" + tableName + " already exists, checking a new name");
tableName = TableName.valueOf(tableName + "!");
} catch (TableNotFoundException e) {
fail = false;
}
} while (fail);
// snapshot the non-existant table
try {
admin.snapshot("fail", tableName, SnapshotType.FLUSH);
fail("Snapshot succeeded even though there is not table.");
} catch (SnapshotCreationException e) {
LOG.info("Correctly failed to snapshot a non-existant table:" + e.getMessage());
}
}
@Override
protected int doWork() throws Exception {
Connection connection = null;
Admin admin = null;
try {
connection = ConnectionFactory.createConnection(getConf());
admin = connection.getAdmin();
HBaseProtos.SnapshotDescription.Type type = HBaseProtos.SnapshotDescription.Type.FLUSH;
if (snapshotType != null) {
type = ProtobufUtil.createProtosSnapShotDescType(snapshotName);
}
admin.snapshot(
new SnapshotDescription(snapshotName, tableName, ProtobufUtil.createSnapshotType(type)));
} catch (Exception e) {
return -1;
} finally {
if (admin != null) {
admin.close();
}
if (connection != null) {
connection.close();
}
}
return 0;
}
@Test
public void testSnapshotStateAfterMerge() throws Exception {
int numRows = DEFAULT_NUM_ROWS;
// make sure we don't fail on listing snapshots
SnapshotTestingUtils.assertNoSnapshots(admin);
// load the table so we have some data
SnapshotTestingUtils.loadData(UTIL, TABLE_NAME, numRows, TEST_FAM);
// Take a snapshot
String snapshotBeforeMergeName = "snapshotBeforeMerge";
admin.snapshot(snapshotBeforeMergeName, TABLE_NAME, SnapshotType.FLUSH);
// Clone the table
TableName cloneBeforeMergeName = TableName.valueOf("cloneBeforeMerge");
admin.cloneSnapshot(snapshotBeforeMergeName, cloneBeforeMergeName);
SnapshotTestingUtils.waitForTableToBeOnline(UTIL, cloneBeforeMergeName);
// Merge two regions
List<HRegionInfo> regions = admin.getTableRegions(TABLE_NAME);
Collections.sort(
regions,
new Comparator<HRegionInfo>() {
public int compare(HRegionInfo r1, HRegionInfo r2) {
return Bytes.compareTo(r1.getStartKey(), r2.getStartKey());
}
});
int numRegions = admin.getTableRegions(TABLE_NAME).size();
int numRegionsAfterMerge = numRegions - 2;
admin.mergeRegionsAsync(
regions.get(1).getEncodedNameAsBytes(), regions.get(2).getEncodedNameAsBytes(), true);
admin.mergeRegionsAsync(
regions.get(4).getEncodedNameAsBytes(), regions.get(5).getEncodedNameAsBytes(), true);
// Verify that there's one region less
waitRegionsAfterMerge(numRegionsAfterMerge);
assertEquals(numRegionsAfterMerge, admin.getTableRegions(TABLE_NAME).size());
// Clone the table
TableName cloneAfterMergeName = TableName.valueOf("cloneAfterMerge");
admin.cloneSnapshot(snapshotBeforeMergeName, cloneAfterMergeName);
SnapshotTestingUtils.waitForTableToBeOnline(UTIL, cloneAfterMergeName);
verifyRowCount(UTIL, TABLE_NAME, numRows);
verifyRowCount(UTIL, cloneBeforeMergeName, numRows);
verifyRowCount(UTIL, cloneAfterMergeName, numRows);
// test that we can delete the snapshot
UTIL.deleteTable(cloneAfterMergeName);
UTIL.deleteTable(cloneBeforeMergeName);
}
