/** alter用于修改表明。需要新旧两个表明作为参数。 */
@Override
public Builder alter() {
if (type == 2) {
// 修改表名。snapshot
final String snapshotName = "snapShotName";
try {
if (!hBaseAdmin.tableExists(tableName)
|| tableName == null
|| tableName.trim().equals("")) {
Log.error("=== LiMingji Debug Info === TableName is invalid");
return this;
}
if (newTableName == null || newTableName.trim().equals("")) {
Log.error("=== LiMingji error Info === newTableName is invalid");
return this;
}
if (!hBaseAdmin.isTableDisabled(tableName)) hBaseAdmin.disableTable(tableName);
// 删除可能存在的snapShotName
try {
hBaseAdmin.deleteSnapshot(snapshotName);
} catch (IOException e) {
// Do nothing.
}
hBaseAdmin.snapshot(snapshotName, tableName);
hBaseAdmin.cloneSnapshot(snapshotName, newTableName);
hBaseAdmin.deleteSnapshot(snapshotName);
hBaseAdmin.deleteTable(tableName);
} catch (InterruptedException e) {
Log.info("=== LiMingji error Info === alter@DTL interrupt");
} catch (IOException e) {
Log.error("=== LiMingji error Info === alter@DTL IOException");
}
}
return this;
}
@Test(timeout = 180000)
public void testRestoreSnapshot() throws Exception {
String nsp = prefix + "_testRestoreSnapshot";
NamespaceDescriptor nspDesc =
NamespaceDescriptor.create(nsp)
.addConfiguration(TableNamespaceManager.KEY_MAX_REGIONS, "10")
.build();
ADMIN.createNamespace(nspDesc);
assertNotNull("Namespace descriptor found null.", ADMIN.getNamespaceDescriptor(nsp));
TableName tableName1 = TableName.valueOf(nsp + TableName.NAMESPACE_DELIM + "table1");
HTableDescriptor tableDescOne = new HTableDescriptor(tableName1);
ADMIN.createTable(tableDescOne, Bytes.toBytes("AAA"), Bytes.toBytes("ZZZ"), 4);
NamespaceTableAndRegionInfo nstate = getNamespaceState(nsp);
assertEquals("Intial region count should be 4.", 4, nstate.getRegionCount());
String snapshot = "snapshot_testRestoreSnapshot";
ADMIN.snapshot(snapshot, tableName1);
List<HRegionInfo> regions = ADMIN.getTableRegions(tableName1);
Collections.sort(regions);
ADMIN.split(tableName1, Bytes.toBytes("JJJ"));
Thread.sleep(2000);
assertEquals("Total regions count should be 5.", 5, nstate.getRegionCount());
ADMIN.disableTable(tableName1);
ADMIN.restoreSnapshot(snapshot);
assertEquals("Total regions count should be 4 after restore.", 4, nstate.getRegionCount());
ADMIN.enableTable(tableName1);
ADMIN.deleteSnapshot(snapshot);
}
@Test(expected = QuotaExceededException.class, timeout = 30000)
public void testCloneSnapshotQuotaExceed() throws Exception {
String nsp = prefix + "_testTableQuotaExceedWithCloneSnapshot";
NamespaceDescriptor nspDesc =
NamespaceDescriptor.create(nsp)
.addConfiguration(TableNamespaceManager.KEY_MAX_TABLES, "1")
.build();
ADMIN.createNamespace(nspDesc);
assertNotNull("Namespace descriptor found null.", ADMIN.getNamespaceDescriptor(nsp));
TableName tableName = TableName.valueOf(nsp + TableName.NAMESPACE_DELIM + "table1");
TableName cloneTableName = TableName.valueOf(nsp + TableName.NAMESPACE_DELIM + "table2");
HTableDescriptor tableDescOne = new HTableDescriptor(tableName);
ADMIN.createTable(tableDescOne);
String snapshot = "snapshot_testTableQuotaExceedWithCloneSnapshot";
ADMIN.snapshot(snapshot, tableName);
ADMIN.cloneSnapshot(snapshot, cloneTableName);
ADMIN.deleteSnapshot(snapshot);
}
@Test(timeout = 180000)
public void testRestoreSnapshotQuotaExceed() throws Exception {
String nsp = prefix + "_testRestoreSnapshotQuotaExceed";
NamespaceDescriptor nspDesc =
NamespaceDescriptor.create(nsp)
.addConfiguration(TableNamespaceManager.KEY_MAX_REGIONS, "10")
.build();
ADMIN.createNamespace(nspDesc);
NamespaceDescriptor ndesc = ADMIN.getNamespaceDescriptor(nsp);
assertNotNull("Namespace descriptor found null.", ndesc);
TableName tableName1 = TableName.valueOf(nsp + TableName.NAMESPACE_DELIM + "table1");
HTableDescriptor tableDescOne = new HTableDescriptor(tableName1);
ADMIN.createTable(tableDescOne, Bytes.toBytes("AAA"), Bytes.toBytes("ZZZ"), 4);
NamespaceTableAndRegionInfo nstate = getNamespaceState(nsp);
assertEquals("Intial region count should be 4.", 4, nstate.getRegionCount());
String snapshot = "snapshot_testRestoreSnapshotQuotaExceed";
ADMIN.snapshot(snapshot, tableName1);
List<HRegionInfo> regions = ADMIN.getTableRegions(tableName1);
Collections.sort(regions);
ADMIN.split(tableName1, Bytes.toBytes("JJJ"));
Thread.sleep(2000);
assertEquals("Total regions count should be 5.", 5, nstate.getRegionCount());
ndesc.setConfiguration(TableNamespaceManager.KEY_MAX_REGIONS, "2");
ADMIN.modifyNamespace(ndesc);
ADMIN.disableTable(tableName1);
try {
ADMIN.restoreSnapshot(snapshot);
fail(
"Region quota is exceeded so QuotaExceededException should be thrown but HBaseAdmin"
+ " wraps IOException into RestoreSnapshotException");
} catch (RestoreSnapshotException ignore) {
}
ADMIN.enableTable(tableName1);
ADMIN.deleteSnapshot(snapshot);
}
@Test(timeout = 180000)
public void testCloneSnapshot() throws Exception {
String nsp = prefix + "_testCloneSnapshot";
NamespaceDescriptor nspDesc =
NamespaceDescriptor.create(nsp)
.addConfiguration(TableNamespaceManager.KEY_MAX_TABLES, "2")
.addConfiguration(TableNamespaceManager.KEY_MAX_REGIONS, "20")
.build();
ADMIN.createNamespace(nspDesc);
assertNotNull("Namespace descriptor found null.", ADMIN.getNamespaceDescriptor(nsp));
TableName tableName = TableName.valueOf(nsp + TableName.NAMESPACE_DELIM + "table1");
TableName cloneTableName = TableName.valueOf(nsp + TableName.NAMESPACE_DELIM + "table2");
HTableDescriptor tableDescOne = new HTableDescriptor(tableName);
ADMIN.createTable(tableDescOne, Bytes.toBytes("AAA"), Bytes.toBytes("ZZZ"), 4);
String snapshot = "snapshot_testCloneSnapshot";
ADMIN.snapshot(snapshot, tableName);
ADMIN.cloneSnapshot(snapshot, cloneTableName);
int tableLength;
try (RegionLocator locator = ADMIN.getConnection().getRegionLocator(tableName)) {
tableLength = locator.getStartKeys().length;
}
assertEquals(tableName.getNameAsString() + " should have four regions.", 4, tableLength);
try (RegionLocator locator = ADMIN.getConnection().getRegionLocator(cloneTableName)) {
tableLength = locator.getStartKeys().length;
}
assertEquals(cloneTableName.getNameAsString() + " should have four regions.", 4, tableLength);
NamespaceTableAndRegionInfo nstate = getNamespaceState(nsp);
assertEquals("Total tables count should be 2.", 2, nstate.getTables().size());
assertEquals("Total regions count should be.", 8, nstate.getRegionCount());
ADMIN.deleteSnapshot(snapshot);
}