@Test
public void testPreSplit() throws Exception {
byte[][] splits = new byte[][] {Bytes.toBytes("a"), Bytes.toBytes("b"), Bytes.toBytes("c")};
DatasetProperties props =
DatasetProperties.builder().add("hbase.splits", new Gson().toJson(splits)).build();
String presplittedTable = "presplitted";
getTableAdmin(CONTEXT1, presplittedTable, props).create();
HBaseAdmin hBaseAdmin = testHBase.getHBaseAdmin();
try {
List<HRegionInfo> regions =
hBaseTableUtil.getTableRegions(
hBaseAdmin, TableId.from(NAMESPACE1.getId(), presplittedTable));
// note: first region starts at very first row key, so we have one extra to the splits count
Assert.assertEquals(4, regions.size());
Assert.assertArrayEquals(Bytes.toBytes("a"), regions.get(1).getStartKey());
Assert.assertArrayEquals(Bytes.toBytes("b"), regions.get(2).getStartKey());
Assert.assertArrayEquals(Bytes.toBytes("c"), regions.get(3).getStartKey());
} finally {
hBaseAdmin.close();
}
}
@Test
public void testEnableIncrements() throws Exception {
// setup a table with increments disabled and with it enabled
String disableTableName = "incr-disable";
String enabledTableName = "incr-enable";
TableId disabledTableId = TableId.from(NAMESPACE1.getId(), disableTableName);
TableId enabledTableId = TableId.from(NAMESPACE1.getId(), enabledTableName);
HBaseTableAdmin disabledAdmin =
getTableAdmin(CONTEXT1, disableTableName, DatasetProperties.EMPTY);
disabledAdmin.create();
HBaseAdmin admin = testHBase.getHBaseAdmin();
DatasetProperties props =
DatasetProperties.builder().add(Table.PROPERTY_READLESS_INCREMENT, "true").build();
HBaseTableAdmin enabledAdmin = getTableAdmin(CONTEXT1, enabledTableName, props);
enabledAdmin.create();
try {
try {
HTableDescriptor htd = hBaseTableUtil.getHTableDescriptor(admin, disabledTableId);
List<String> cps = htd.getCoprocessors();
assertFalse(cps.contains(IncrementHandler.class.getName()));
htd = hBaseTableUtil.getHTableDescriptor(admin, enabledTableId);
cps = htd.getCoprocessors();
assertTrue(cps.contains(IncrementHandler.class.getName()));
} finally {
admin.close();
}
BufferingTable table = getTable(CONTEXT1, enabledTableName, ConflictDetection.COLUMN);
byte[] row = Bytes.toBytes("row1");
byte[] col = Bytes.toBytes("col1");
DetachedTxSystemClient txSystemClient = new DetachedTxSystemClient();
Transaction tx = txSystemClient.startShort();
table.startTx(tx);
table.increment(row, col, 10);
table.commitTx();
// verify that value was written as a delta value
final byte[] expectedValue =
Bytes.add(IncrementHandlerState.DELTA_MAGIC_PREFIX, Bytes.toBytes(10L));
final AtomicBoolean foundValue = new AtomicBoolean();
byte[] enabledTableNameBytes =
hBaseTableUtil.getHTableDescriptor(admin, enabledTableId).getName();
testHBase.forEachRegion(
enabledTableNameBytes,
new Function<HRegion, Object>() {
@Nullable
@Override
public Object apply(@Nullable HRegion hRegion) {
Scan scan = new Scan();
try {
RegionScanner scanner = hRegion.getScanner(scan);
List<Cell> results = Lists.newArrayList();
boolean hasMore;
do {
hasMore = scanner.next(results);
for (Cell cell : results) {
if (CellUtil.matchingValue(cell, expectedValue)) {
foundValue.set(true);
}
}
} while (hasMore);
} catch (IOException ioe) {
fail("IOException scanning region: " + ioe.getMessage());
}
return null;
}
});
assertTrue(
"Should have seen the expected encoded delta value in the "
+ enabledTableName
+ " table region",
foundValue.get());
} finally {
disabledAdmin.drop();
enabledAdmin.drop();
}
}
