return func(tableColumn string) (table, column string) {
		if matches := nameMatcher.FindStringSubmatch(tableColumn); len(matches) == 4 {
			table = matches[1]
			star := matches[2]
			columnName := matches[3]
			if star != "" {
				return table, star
			}
			return table, columnName
		}
		return "", ""
	}
}()

// SelectAndOmitColumns get select and omit columns, select -> true, omit -> false

		start := -1
		for i := 0; i < len(s); {
			r, size := utf8.DecodeRune(s[i:])
			if f(r) {
				if start >= 0 {
					if !yield(s[start:i:i]) {
						return
					}
					start = -1
				}
			} else if start < 0 {
				start = i
			}
			i += size
		}
		if start >= 0 {
			yield(s[start:len(s):len(s)])
		}
	}

        }
    }

    public void test_execute_2instance() throws Exception {
        final CrawlerWebServer server1 = new CrawlerWebServer(7070);
        server1.start();
        final CrawlerWebServer server2 = new CrawlerWebServer(7071);
        server2.start();

        final String url1 = "http://localhost:7070/";
        final String url2 = "http://localhost:7071/";
        try {
            final int maxCount = 10;

	start := -1 // valid span start if >= 0
	for i := 0; i < len(s); {
		r, size := utf8.DecodeRune(s[i:])
		if f(r) {
			if start >= 0 {
				spans = append(spans, span{start, i})
				start = -1
			}
		} else {
			if start < 0 {
				start = i
			}
		}
		i += size
	}

	// Last field might end at EOF.
	if start >= 0 {

        }
    }

    public void test_execute_2instanceTx() throws Exception {
        final CrawlerWebServer server1 = new CrawlerWebServer(7070);
        server1.start();
        final CrawlerWebServer server2 = new CrawlerWebServer(7071);
        server2.start();

        final String url1 = "http://localhost:7070/";
        final String url2 = "http://localhost:7071/";
        try {
            final int maxCount = 10;

        }
    }

    public void test_execute_2instance() throws Exception {
        final CrawlerWebServer server1 = new CrawlerWebServer(7070);
        server1.start();
        final CrawlerWebServer server2 = new CrawlerWebServer(7071);
        server2.start();

        final String url1 = "http://localhost:7070/";
        final String url2 = "http://localhost:7071/";
        try {
            final int maxCount = 10;

                    Thread.currentThread().interrupt();
                } finally {
                    endLatch.countDown();
                }
            }
        });

        thread1.start();
        thread2.start();
        startLatch.countDown();
        endLatch.await(5, TimeUnit.SECONDS);

        assertEquals(2, successCount.get());
    }

    /**

	objectAPI, _ := validateAdminReq(ctx, w, r, policy.RebalanceAdminAction)
	if objectAPI == nil {
		return
	}

	// NB rebalance-start admin API is always coordinated from first pool's
	// first node. The following is required to serialize (the effects of)
	// concurrent rebalance-start commands.
	if ep := globalEndpoints[0].Endpoints[0]; !ep.IsLocal {
		for nodeIdx, proxyEp := range globalProxyEndpoints {

                            exceptions.add(e);
                        }
                    }
                }
            });
        }

        // Start all threads
        for (Thread thread : threads) {
            thread.start();
        }

        // Wait for all threads to complete
        for (Thread thread : threads) {
            thread.join();
        }

        // Verify results

                            exceptions.add(e);
                        }
                    }
                }
            });
        }

        // Start all threads
        for (Thread thread : threads) {
            thread.start();
        }

        // Wait for all threads to complete
        for (Thread thread : threads) {
            thread.join();
        }