@Test(timeout = 300000)
public void testTableAvailableWithRandomSplitKeys() throws Exception {
TableName tableName = TableName.valueOf("testTableAvailableWithRandomSplitKeys");
HTableDescriptor desc = new HTableDescriptor(tableName);
desc.addFamily(new HColumnDescriptor("col"));
byte[][] splitKeys = new byte[1][];
splitKeys =
new byte[][] {
new byte[] {1, 1, 1},
new byte[] {2, 2, 2}
};
admin.createTable(desc);
boolean tableAvailable = admin.isTableAvailable(tableName, splitKeys);
assertFalse("Table should be created with 1 row in META", tableAvailable);
}
@Test(timeout = 300000)
public void testCreateTableWithRegions() throws IOException, InterruptedException {
TableName tableName = TableName.valueOf("testCreateTableWithRegions");
byte[][] splitKeys = {
new byte[] {1, 1, 1},
new byte[] {2, 2, 2},
new byte[] {3, 3, 3},
new byte[] {4, 4, 4},
new byte[] {5, 5, 5},
new byte[] {6, 6, 6},
new byte[] {7, 7, 7},
new byte[] {8, 8, 8},
new byte[] {9, 9, 9},
};
int expectedRegions = splitKeys.length + 1;
HTableDescriptor desc = new HTableDescriptor(tableName);
desc.addFamily(new HColumnDescriptor(HConstants.CATALOG_FAMILY));
admin.createTable(desc, splitKeys);
boolean tableAvailable = admin.isTableAvailable(tableName, splitKeys);
assertTrue("Table should be created with splitKyes + 1 rows in META", tableAvailable);
HTable ht = new HTable(TEST_UTIL.getConfiguration(), tableName);
Map<HRegionInfo, ServerName> regions = ht.getRegionLocations();
assertEquals(
"Tried to create " + expectedRegions + " regions " + "but only found " + regions.size(),
expectedRegions,
regions.size());
System.err.println("Found " + regions.size() + " regions");
Iterator<HRegionInfo> hris = regions.keySet().iterator();
HRegionInfo hri = hris.next();
assertTrue(hri.getStartKey() == null || hri.getStartKey().length == 0);
assertTrue(Bytes.equals(hri.getEndKey(), splitKeys[0]));
hri = hris.next();
assertTrue(Bytes.equals(hri.getStartKey(), splitKeys[0]));
assertTrue(Bytes.equals(hri.getEndKey(), splitKeys[1]));
hri = hris.next();
assertTrue(Bytes.equals(hri.getStartKey(), splitKeys[1]));
assertTrue(Bytes.equals(hri.getEndKey(), splitKeys[2]));
hri = hris.next();
assertTrue(Bytes.equals(hri.getStartKey(), splitKeys[2]));
assertTrue(Bytes.equals(hri.getEndKey(), splitKeys[3]));
hri = hris.next();
assertTrue(Bytes.equals(hri.getStartKey(), splitKeys[3]));
assertTrue(Bytes.equals(hri.getEndKey(), splitKeys[4]));
hri = hris.next();
assertTrue(Bytes.equals(hri.getStartKey(), splitKeys[4]));
assertTrue(Bytes.equals(hri.getEndKey(), splitKeys[5]));
hri = hris.next();
assertTrue(Bytes.equals(hri.getStartKey(), splitKeys[5]));
assertTrue(Bytes.equals(hri.getEndKey(), splitKeys[6]));
hri = hris.next();
assertTrue(Bytes.equals(hri.getStartKey(), splitKeys[6]));
assertTrue(Bytes.equals(hri.getEndKey(), splitKeys[7]));
hri = hris.next();
assertTrue(Bytes.equals(hri.getStartKey(), splitKeys[7]));
assertTrue(Bytes.equals(hri.getEndKey(), splitKeys[8]));
hri = hris.next();
assertTrue(Bytes.equals(hri.getStartKey(), splitKeys[8]));
assertTrue(hri.getEndKey() == null || hri.getEndKey().length == 0);
verifyRoundRobinDistribution(ht, expectedRegions);
ht.close();
// Now test using start/end with a number of regions
// Use 80 bit numbers to make sure we aren't limited
byte[] startKey = {1, 1, 1, 1, 1, 1, 1, 1, 1, 1};
byte[] endKey = {9, 9, 9, 9, 9, 9, 9, 9, 9, 9};
// Splitting into 10 regions, we expect (null,1) ... (9, null)
// with (1,2) (2,3) (3,4) (4,5) (5,6) (6,7) (7,8) (8,9) in the middle
expectedRegions = 10;
TableName TABLE_2 = TableName.valueOf(tableName.getNameAsString() + "_2");
desc = new HTableDescriptor(TABLE_2);
desc.addFamily(new HColumnDescriptor(HConstants.CATALOG_FAMILY));
admin = new HBaseAdmin(TEST_UTIL.getConfiguration());
admin.createTable(desc, startKey, endKey, expectedRegions);
HTable ht2 = new HTable(TEST_UTIL.getConfiguration(), TABLE_2);
regions = ht2.getRegionLocations();
assertEquals(
"Tried to create " + expectedRegions + " regions " + "but only found " + regions.size(),
expectedRegions,
regions.size());
System.err.println("Found " + regions.size() + " regions");
hris = regions.keySet().iterator();
hri = hris.next();
assertTrue(hri.getStartKey() == null || hri.getStartKey().length == 0);
assertTrue(Bytes.equals(hri.getEndKey(), new byte[] {1, 1, 1, 1, 1, 1, 1, 1, 1, 1}));
hri = hris.next();
assertTrue(Bytes.equals(hri.getStartKey(), new byte[] {1, 1, 1, 1, 1, 1, 1, 1, 1, 1}));
assertTrue(Bytes.equals(hri.getEndKey(), new byte[] {2, 2, 2, 2, 2, 2, 2, 2, 2, 2}));
hri = hris.next();
assertTrue(Bytes.equals(hri.getStartKey(), new byte[] {2, 2, 2, 2, 2, 2, 2, 2, 2, 2}));
assertTrue(Bytes.equals(hri.getEndKey(), new byte[] {3, 3, 3, 3, 3, 3, 3, 3, 3, 3}));
hri = hris.next();
assertTrue(Bytes.equals(hri.getStartKey(), new byte[] {3, 3, 3, 3, 3, 3, 3, 3, 3, 3}));
assertTrue(Bytes.equals(hri.getEndKey(), new byte[] {4, 4, 4, 4, 4, 4, 4, 4, 4, 4}));
hri = hris.next();
assertTrue(Bytes.equals(hri.getStartKey(), new byte[] {4, 4, 4, 4, 4, 4, 4, 4, 4, 4}));
assertTrue(Bytes.equals(hri.getEndKey(), new byte[] {5, 5, 5, 5, 5, 5, 5, 5, 5, 5}));
hri = hris.next();
assertTrue(Bytes.equals(hri.getStartKey(), new byte[] {5, 5, 5, 5, 5, 5, 5, 5, 5, 5}));
assertTrue(Bytes.equals(hri.getEndKey(), new byte[] {6, 6, 6, 6, 6, 6, 6, 6, 6, 6}));
hri = hris.next();
assertTrue(Bytes.equals(hri.getStartKey(), new byte[] {6, 6, 6, 6, 6, 6, 6, 6, 6, 6}));
assertTrue(Bytes.equals(hri.getEndKey(), new byte[] {7, 7, 7, 7, 7, 7, 7, 7, 7, 7}));
hri = hris.next();
assertTrue(Bytes.equals(hri.getStartKey(), new byte[] {7, 7, 7, 7, 7, 7, 7, 7, 7, 7}));
assertTrue(Bytes.equals(hri.getEndKey(), new byte[] {8, 8, 8, 8, 8, 8, 8, 8, 8, 8}));
hri = hris.next();
assertTrue(Bytes.equals(hri.getStartKey(), new byte[] {8, 8, 8, 8, 8, 8, 8, 8, 8, 8}));
assertTrue(Bytes.equals(hri.getEndKey(), new byte[] {9, 9, 9, 9, 9, 9, 9, 9, 9, 9}));
hri = hris.next();
assertTrue(Bytes.equals(hri.getStartKey(), new byte[] {9, 9, 9, 9, 9, 9, 9, 9, 9, 9}));
assertTrue(hri.getEndKey() == null || hri.getEndKey().length == 0);
verifyRoundRobinDistribution(ht2, expectedRegions);
ht2.close();
// Try once more with something that divides into something infinite
startKey = new byte[] {0, 0, 0, 0, 0, 0};
endKey = new byte[] {1, 0, 0, 0, 0, 0};
expectedRegions = 5;
TableName TABLE_3 = TableName.valueOf(tableName.getNameAsString() + "_3");
desc = new HTableDescriptor(TABLE_3);
desc.addFamily(new HColumnDescriptor(HConstants.CATALOG_FAMILY));
admin = new HBaseAdmin(TEST_UTIL.getConfiguration());
admin.createTable(desc, startKey, endKey, expectedRegions);
HTable ht3 = new HTable(TEST_UTIL.getConfiguration(), TABLE_3);
regions = ht3.getRegionLocations();
assertEquals(
"Tried to create " + expectedRegions + " regions " + "but only found " + regions.size(),
expectedRegions,
regions.size());
System.err.println("Found " + regions.size() + " regions");
verifyRoundRobinDistribution(ht3, expectedRegions);
ht3.close();
// Try an invalid case where there are duplicate split keys
splitKeys =
new byte[][] {
new byte[] {1, 1, 1},
new byte[] {2, 2, 2},
new byte[] {3, 3, 3},
new byte[] {2, 2, 2}
};
TableName TABLE_4 = TableName.valueOf(tableName.getNameAsString() + "_4");
desc = new HTableDescriptor(TABLE_4);
desc.addFamily(new HColumnDescriptor(HConstants.CATALOG_FAMILY));
Admin ladmin = new HBaseAdmin(TEST_UTIL.getConfiguration());
try {
ladmin.createTable(desc, splitKeys);
assertTrue(
"Should not be able to create this table because of " + "duplicate split keys", false);
} catch (IllegalArgumentException iae) {
// Expected
}
ladmin.close();
}