@Test
public void testGetRegionsCatalogTables() throws IOException, InterruptedException {
List<HRegionInfo> regions = MetaReader.getTableRegions(ct, HConstants.META_TABLE_NAME);
assertTrue(regions.size() >= 1);
assertTrue(
MetaReader.getTableRegionsAndLocations(ct, Bytes.toString(HConstants.META_TABLE_NAME))
.size()
>= 1);
assertTrue(
MetaReader.getTableRegionsAndLocations(ct, Bytes.toString(HConstants.ROOT_TABLE_NAME))
.size()
== 1);
}
@Test
public void testTableExists() throws IOException {
final String name = "testTableExists";
final byte[] nameBytes = Bytes.toBytes(name);
assertFalse(MetaReader.tableExists(ct, name));
UTIL.createTable(nameBytes, HConstants.CATALOG_FAMILY);
assertTrue(MetaReader.tableExists(ct, name));
HBaseAdmin admin = UTIL.getHBaseAdmin();
admin.disableTable(name);
admin.deleteTable(name);
assertFalse(MetaReader.tableExists(ct, name));
assertTrue(MetaReader.tableExists(ct, Bytes.toString(HConstants.META_TABLE_NAME)));
assertTrue(MetaReader.tableExists(ct, Bytes.toString(HConstants.ROOT_TABLE_NAME)));
}
@Test
public void testGetRegion() throws IOException, InterruptedException {
final String name = "testGetRegion";
LOG.info("Started " + name);
final byte[] nameBytes = Bytes.toBytes(name);
HTable t = UTIL.createTable(nameBytes, HConstants.CATALOG_FAMILY);
int regionCount = UTIL.createMultiRegions(t, HConstants.CATALOG_FAMILY);
// Test it works getting a region from user table.
List<HRegionInfo> regions = MetaReader.getTableRegions(ct, nameBytes);
assertEquals(regionCount, regions.size());
Pair<HRegionInfo, HServerAddress> pair =
MetaReader.getRegion(ct, regions.get(0).getRegionName());
assertEquals(regions.get(0).getEncodedName(), pair.getFirst().getEncodedName());
// Test get on non-existent region.
pair = MetaReader.getRegion(ct, Bytes.toBytes("nonexistent-region"));
assertNull(pair);
// Test it works getting a region from meta/root.
pair = MetaReader.getRegion(ct, HRegionInfo.FIRST_META_REGIONINFO.getRegionName());
assertEquals(
HRegionInfo.FIRST_META_REGIONINFO.getEncodedName(), pair.getFirst().getEncodedName());
LOG.info("Finished " + name);
}