/**
* Separate from constructor, because initialize() may need to be called in a separate thread.
*/
synchronized void initialize() {
assertState(QueryState.CREATED);
this.hiveConf = new HiveConf(Driver.class);
// Update configuration with user/group info.
if (query.hadoop_user == null) {
throw new RuntimeException("User must be specified.");
}
// Update scratch dir (to have one per user)
File scratchDir = new File("/tmp/hive-beeswax-" + query.hadoop_user);
hiveConf.set(HiveConf.ConfVars.SCRATCHDIR.varname, scratchDir.getPath());
// Create the temporary directory if necessary.
// If mapred.job.tracker is set to local, this is used by MapRedTask.
if (!scratchDir.isDirectory()) {
if (scratchDir.exists() || !scratchDir.mkdirs()) {
LOG.warn("Could not create tmp dir:" + scratchDir);
}
}
driver = new Driver(hiveConf);
ClassLoader loader = hiveConf.getClassLoader();
String auxJars = HiveConf.getVar(hiveConf, HiveConf.ConfVars.HIVEAUXJARS);
if (StringUtils.isNotBlank(auxJars)) {
try {
loader = Utilities.addToClassPath(loader, StringUtils.split(auxJars, ","));
} catch (Exception e) {
LOG.error("Failed to add jars to class loader: " + auxJars, e);
}
}
hiveConf.setClassLoader(loader);
Thread.currentThread().setContextClassLoader(loader);
SessionState.start(hiveConf); // this is thread-local
this.sessionState = SessionState.get();
// If this work has a LogContext, associate the children output to the logContext
OutputStream lcOutStream = null;
if (this.logContext != null) lcOutStream = this.logContext.getOutputStream();
// A copy of everything goes to the LogContext.
// In addition, stderr goes to errStream for error reporting.
// Note that child output is explicitly tee to System.{out,err},
// otherwise it'll be swallowed by outStream.
this.sessionState.out = new PrintStream(new TeeOutputStream(lcOutStream, this.outStream));
this.sessionState.err = new PrintStream(new TeeOutputStream(lcOutStream, this.errStream));
this.sessionState.childOut =
new PrintStream(new TeeOutputStream(System.out, sessionState.out));
this.sessionState.childErr =
new PrintStream(new TeeOutputStream(System.err, sessionState.err));
this.state = QueryState.INITIALIZED;
}
// reloading the jars under the path specified in hive.reloadable.aux.jars.path property
public void reloadAuxJars() throws IOException {
final Set<String> reloadedAuxJars = new HashSet<String>();
final String renewableJarPath = conf.getVar(ConfVars.HIVERELOADABLEJARS);
// do nothing if this property is not specified or empty
if (renewableJarPath == null || renewableJarPath.isEmpty()) {
return;
}
Set<String> jarPaths = Utilities.getJarFilesByPath(renewableJarPath);
// load jars under the hive.reloadable.aux.jars.path
if (!jarPaths.isEmpty()) {
reloadedAuxJars.addAll(jarPaths);
}
// remove the previous renewable jars
try {
if (preReloadableAuxJars != null && !preReloadableAuxJars.isEmpty()) {
Utilities.removeFromClassPath(preReloadableAuxJars.toArray(new String[0]));
}
} catch (Exception e) {
String msg = "Fail to remove the reloaded jars loaded last time: " + e;
throw new IOException(msg, e);
}
try {
if (reloadedAuxJars != null && !reloadedAuxJars.isEmpty()) {
URLClassLoader currentCLoader =
(URLClassLoader) SessionState.get().getConf().getClassLoader();
currentCLoader =
(URLClassLoader)
Utilities.addToClassPath(currentCLoader, reloadedAuxJars.toArray(new String[0]));
conf.setClassLoader(currentCLoader);
Thread.currentThread().setContextClassLoader(currentCLoader);
}
preReloadableAuxJars.clear();
preReloadableAuxJars.addAll(reloadedAuxJars);
} catch (Exception e) {
String msg =
"Fail to add jars from the path specified in hive.reloadable.aux.jars.path property: "
+ e;
throw new IOException(msg, e);
}
}
public static void main(String[] args) throws Exception {
OptionsProcessor oproc = new OptionsProcessor();
if (!oproc.process_stage1(args)) {
System.exit(1);
}
SessionState.initHiveLog4j();
CliSessionState ss = new CliSessionState(new HiveConf(SessionState.class));
ss.in = System.in;
try {
ss.out = new PrintStream(System.out, true, "UTF-8");
ss.err = new PrintStream(System.err, true, "UTF-8");
} catch (UnsupportedEncodingException e) {
System.exit(3);
}
if (!oproc.process_stage2(ss)) {
System.exit(2);
}
HiveConf conf = ss.getConf();
for (Map.Entry<Object, Object> item : ss.cmdProperties.entrySet()) {
conf.set((String) item.getKey(), (String) item.getValue());
}
if (!ShimLoader.getHadoopShims().usesJobShell()) {
ClassLoader loader = conf.getClassLoader();
String auxJars = HiveConf.getVar(conf, HiveConf.ConfVars.HIVEAUXJARS);
if (StringUtils.isNotBlank(auxJars)) {
loader = Utilities.addToClassPath(loader, StringUtils.split(auxJars, ","));
}
conf.setClassLoader(loader);
Thread.currentThread().setContextClassLoader(loader);
}
SessionState.start(ss);
CliDriver cli = new CliDriver();
Hive hive = Hive.get();
String username = ss.getUserName();
String passwd = ss.passwd;
if (!hive.isAUser(username, passwd)) {
System.out.println("User or passwd is wrong!");
System.exit(0);
} else {
System.out.println("Connect to TDW successfully!");
}
if (ss.getDbName() == null) {
ss.setDbName(MetaStoreUtils.DEFAULT_DATABASE_NAME);
}
if (ss.execString != null) {
System.exit(cli.processLine(ss.execString));
}
try {
if (ss.fileName != null) {
System.exit(cli.processReader(new BufferedReader(new FileReader(ss.fileName))));
}
} catch (FileNotFoundException e) {
System.err.println("Could not open input file for reading. (" + e.getMessage() + ")");
System.exit(3);
}
ConsoleReader reader = new ConsoleReader();
reader.setBellEnabled(false);
List<SimpleCompletor> completors = new LinkedList<SimpleCompletor>();
completors.add(
new SimpleCompletor(
new String[] {"set", "from", "create", "load", "describe", "quit", "exit"}));
reader.addCompletor(new ArgumentCompletor(completors));
String line;
final String HISTORYFILE = ".hivehistory";
String historyFile = System.getProperty("user.home") + File.separator + HISTORYFILE;
reader.setHistory(new History(new File(historyFile)));
int ret = 0;
String prefix = "";
String curPrompt = prompt;
while ((line = reader.readLine(curPrompt + "> ")) != null) {
if (!prefix.equals("")) {
prefix += '\n';
}
if (line.trim().endsWith(";") && !line.trim().endsWith("\\;")) {
line = prefix + line;
ret = cli.processLine(line);
prefix = "";
curPrompt = prompt;
} else {
prefix = prefix + line;
curPrompt = prompt2;
continue;
}
}
System.exit(ret);
}
@Override
protected void runReportal() throws Exception {
System.out.println("Reportal Hive: Setting up Hive");
HiveConf conf = new HiveConf(SessionState.class);
if (System.getenv("HADOOP_TOKEN_FILE_LOCATION") != null) {
conf.set("mapreduce.job.credentials.binary", System.getenv("HADOOP_TOKEN_FILE_LOCATION"));
}
File tempTSVFile = new File("./temp.tsv");
OutputStream tsvTempOutputStream =
new BoundedOutputStream(
new BufferedOutputStream(new FileOutputStream(tempTSVFile)), outputCapacity);
PrintStream logOut = System.out;
// NOTE: It is critical to do this here so that log4j is reinitialized
// before any of the other core hive classes are loaded
// [email protected]: I disabled this because it appears to swallow
// all future logging (even outside of hive).
// SessionState.initHiveLog4j();
String orig = HiveConf.getVar(conf, HiveConf.ConfVars.HIVEAUXJARS);
CliSessionState sessionState = new CliSessionState(conf);
sessionState.in = System.in;
sessionState.out = new PrintStream(tsvTempOutputStream, true, "UTF-8");
sessionState.err = new PrintStream(logOut, true, "UTF-8");
OptionsProcessor oproc = new OptionsProcessor();
// Feed in Hive Args
String[] args = buildHiveArgs();
if (!oproc.process_stage1(args)) {
throw new Exception("unable to parse options stage 1");
}
if (!oproc.process_stage2(sessionState)) {
throw new Exception("unable to parse options stage 2");
}
// Set all properties specified via command line
for (Map.Entry<Object, Object> item : sessionState.cmdProperties.entrySet()) {
conf.set((String) item.getKey(), (String) item.getValue());
}
SessionState.start(sessionState);
String expanded = expandHiveAuxJarsPath(orig);
if (orig == null || orig.equals(expanded)) {
System.out.println("Hive aux jars variable not expanded");
} else {
System.out.println("Expanded aux jars variable from [" + orig + "] to [" + expanded + "]");
HiveConf.setVar(conf, HiveConf.ConfVars.HIVEAUXJARS, expanded);
}
if (!ShimLoader.getHadoopShims().usesJobShell()) {
// hadoop-20 and above - we need to augment classpath using hiveconf
// components
// see also: code in ExecDriver.java
ClassLoader loader = conf.getClassLoader();
String auxJars = HiveConf.getVar(conf, HiveConf.ConfVars.HIVEAUXJARS);
System.out.println("Got auxJars = " + auxJars);
if (StringUtils.isNotBlank(auxJars)) {
loader = Utilities.addToClassPath(loader, StringUtils.split(auxJars, ","));
}
conf.setClassLoader(loader);
Thread.currentThread().setContextClassLoader(loader);
}
CliDriver cli = new CliDriver();
int returnValue = 0;
String prefix = "";
returnValue = cli.processLine("set hive.cli.print.header=true;");
String[] queries = jobQuery.split("\n");
for (String line : queries) {
if (!prefix.isEmpty()) {
prefix += '\n';
}
if (line.trim().endsWith(";") && !line.trim().endsWith("\\;")) {
line = prefix + line;
line = injectVariables(line);
System.out.println("Reportal Hive: Running Hive Query: " + line);
System.out.println(
"Reportal Hive: HiveConf HIVEAUXJARS: "
+ HiveConf.getVar(conf, HiveConf.ConfVars.HIVEAUXJARS));
returnValue = cli.processLine(line);
prefix = "";
} else {
prefix = prefix + line;
continue;
}
}
tsvTempOutputStream.close();
// convert tsv to csv and write it do disk
System.out.println("Reportal Hive: Converting output");
InputStream tsvTempInputStream = new BufferedInputStream(new FileInputStream(tempTSVFile));
Scanner rowScanner = new Scanner(tsvTempInputStream);
PrintStream csvOutputStream = new PrintStream(outputStream);
while (rowScanner.hasNextLine()) {
String tsvLine = rowScanner.nextLine();
// strip all quotes, and then quote the columns
csvOutputStream.println("\"" + tsvLine.replace("\"", "").replace("\t", "\",\"") + "\"");
}
rowScanner.close();
csvOutputStream.close();
// Flush the temp file out
tempTSVFile.delete();
if (returnValue != 0) {
throw new Exception("Hive query finished with a non zero return code");
}
System.out.println("Reportal Hive: Ended successfully");
}