}
private void run() throws IOError, TException, NotFound, IllegalArgument,
AlreadyExists {
TTransport transport = new TSocket("localhost", port);
TProtocol protocol = new TBinaryProtocol(transport, true, true);
Hbase.Client client = new Hbase.Client(protocol);
transport.open();
byte[] t = bytes("demo_table");
//
// Scan all tables, look for the demo table and delete it.
//
System.out.println("scanning tables...");
for (byte[] name : client.getTableNames()) {
System.out.println(" found: " + utf8(name));
if (utf8(name).equals(utf8(t))) {
System.out.println(" disabling table: " + utf8(name));
if (client.isTableEnabled(name))
client.disableTable(name);
System.out.println(" deleting table: " + utf8(name));
client.deleteTable(name);
}
}
//
// Create the demo table with two column families, entry: and unused:
//
ArrayList<ColumnDescriptor> columns = new ArrayList<ColumnDescriptor>();
ColumnDescriptor col = null;
col = new ColumnDescriptor();
col.name = bytes("entry:");
col.maxVersions = 10;
columns.add(col);
col = new ColumnDescriptor();
col.name = bytes("unused:");
columns.add(col);
System.out.println("creating table: " + utf8(t));
try {
client.createTable(t, columns);
} catch (AlreadyExists ae) {
System.out.println("WARN: " + ae.message);
}
System.out.println("column families in " + utf8(t) + ": ");
Map<byte[], ColumnDescriptor> columnMap = client.getColumnDescriptors(t);
for (ColumnDescriptor col2 : columnMap.values()) {
System.out.println(" column: " + utf8(col2.name) + ", maxVer: " + Integer.toString(col2.maxVersions));
}
//
// Test UTF-8 handling
//
byte[] invalid = { (byte) 'f', (byte) 'o', (byte) 'o', (byte) '-', (byte) 0xfc, (byte) 0xa1, (byte) 0xa1, (byte) 0xa1, (byte) 0xa1 };
byte[] valid = { (byte) 'f', (byte) 'o', (byte) 'o', (byte) '-', (byte) 0xE7, (byte) 0x94, (byte) 0x9F, (byte) 0xE3, (byte) 0x83, (byte) 0x93, (byte) 0xE3, (byte) 0x83, (byte) 0xBC, (byte) 0xE3, (byte) 0x83, (byte) 0xAB};
ArrayList<Mutation> mutations;
// non-utf8 is fine for data
mutations = new ArrayList<Mutation>();
mutations.add(new Mutation(false, bytes("entry:foo"), invalid));
client.mutateRow(t, bytes("foo"), mutations);
// try empty strings
mutations = new ArrayList<Mutation>();
mutations.add(new Mutation(false, bytes("entry:"), bytes("")));
client.mutateRow(t, bytes(""), mutations);
// this row name is valid utf8
mutations = new ArrayList<Mutation>();
mutations.add(new Mutation(false, bytes("entry:foo"), valid));
client.mutateRow(t, bytes("foo"), mutations);
// non-utf8 is not allowed in row names
try {
mutations = new ArrayList<Mutation>();
mutations.add(new Mutation(false, bytes("entry:foo"), invalid));
client.mutateRow(t, invalid, mutations);
System.out.println("FATAL: shouldn't get here");
System.exit(-1);
} catch (IOError e) {
System.out.println("expected error: " + e.message);
}
// Run a scanner on the rows we just created
ArrayList<byte[]> columnNames = new ArrayList<byte[]>();
columnNames.add(bytes("entry:"));
System.out.println("Starting scanner...");
int scanner = client.scannerOpen(t, bytes(""), columnNames);
try {
while (true) {
TRowResult entry = client.scannerGet(scanner);
printRow(entry);
}
} catch (NotFound nf) {
client.scannerClose(scanner);
System.out.println("Scanner finished");
}
//
// Run some operations on a bunch of rows
//
for (int i = 100; i >= 0; --i) {
// format row keys as "00000" to "00100"
NumberFormat nf = NumberFormat.getInstance();
nf.setMinimumIntegerDigits(5);
nf.setGroupingUsed(false);
byte[] row = bytes(nf.format(i));
mutations = new ArrayList<Mutation>();
mutations.add(new Mutation(false, bytes("unused:"), bytes("DELETE_ME")));
client.mutateRow(t, row, mutations);
printRow(client.getRow(t, row));
client.deleteAllRow(t, row);
mutations = new ArrayList<Mutation>();
mutations.add(new Mutation(false, bytes("entry:num"), bytes("0")));
mutations.add(new Mutation(false, bytes("entry:foo"), bytes("FOO")));
client.mutateRow(t, row, mutations);
printRow(client.getRow(t, row));
Mutation m = null;
mutations = new ArrayList<Mutation>();
m = new Mutation();
m.column = bytes("entry:foo");
m.isDelete = true;
mutations.add(m);
m = new Mutation();
m.column = bytes("entry:num");
m.value = bytes("-1");
mutations.add(m);
client.mutateRow(t, row, mutations);
printRow(client.getRow(t, row));
mutations = new ArrayList<Mutation>();
mutations.add(new Mutation(false, bytes("entry:num"), bytes(Integer.toString(i))));
mutations.add(new Mutation(false, bytes("entry:sqr"), bytes(Integer.toString(i * i))));
client.mutateRow(t, row, mutations);
printRow(client.getRow(t, row));
// sleep to force later timestamp
try {
Thread.sleep(50);
} catch (InterruptedException e) {
// no-op
}
mutations.clear();
m = new Mutation();
m.column = bytes("entry:num");
m.value = bytes("-999");
mutations.add(m);
m = new Mutation();
m.column = bytes("entry:sqr");
m.isDelete = true;
client.mutateRowTs(t, row, mutations, 1); // shouldn't override latest
printRow(client.getRow(t, row));
List<TCell> versions = client.getVer(t, row, bytes("entry:num"), 10);
printVersions(row, versions);
if (versions.size() != 4) {
System.out.println("FATAL: wrong # of versions");
System.exit(-1);
}
try {
client.get(t, row, bytes("entry:foo"));
System.out.println("FATAL: shouldn't get here");
System.exit(-1);
} catch (NotFound nf2) {
// blank
}
System.out.println("");
}
// scan all rows/columnNames
columnNames.clear();
for (ColumnDescriptor col2 : client.getColumnDescriptors(t).values()) {
System.out.println("column name is " + new String(col2.name));
System.out.println(col2.toString());
columnNames.add((utf8(col2.name) + ":").getBytes());
}
System.out.println("Starting scanner...");
scanner = client.scannerOpenWithStop(t, bytes("00020"), bytes("00040"),
columnNames);
try {
while (true) {
TRowResult entry = client.scannerGet(scanner);
printRow(entry);
}
} catch (NotFound nf) {
client.scannerClose(scanner);
System.out.println("Scanner finished");
}
transport.close();
}