public boolean scheduleAndWait(
final String id, ExtractionNamespace namespace, long waitForFirstRun) {
if (scheduleOrUpdate(id, namespace)) {
log.debug("Scheduled new namespace [%s]: %s", id, namespace);
} else {
log.debug("Namespace [%s] already running: %s", id, namespace);
}
final NamespaceImplData namespaceImplData = implData.get(id);
if (namespaceImplData == null) {
log.warn("NamespaceLookupExtractorFactory[%s] - deleted during start", id);
return false;
}
boolean success = false;
try {
success = namespaceImplData.firstRun.await(waitForFirstRun, TimeUnit.MILLISECONDS);
} catch (InterruptedException e) {
log.error(e, "NamespaceLookupExtractorFactory[%s] - interrupted during start", id);
}
if (!success) {
delete(id);
}
return success;
}
@Override
protected void map(Object key, Object value, Context context)
throws IOException, InterruptedException {
try {
final InputRow inputRow;
try {
inputRow = parseInputRow(value, parser);
} catch (Exception e) {
if (config.isIgnoreInvalidRows()) {
log.debug(e, "Ignoring invalid row [%s] due to parsing error", value.toString());
context
.getCounter(HadoopDruidIndexerConfig.IndexJobCounters.INVALID_ROW_COUNTER)
.increment(1);
return; // we're ignoring this invalid row
} else {
throw e;
}
}
if (!granularitySpec.bucketIntervals().isPresent()
|| granularitySpec
.bucketInterval(new DateTime(inputRow.getTimestampFromEpoch()))
.isPresent()) {
innerMap(inputRow, value, context);
}
} catch (RuntimeException e) {
throw new RE(e, "Failure on row[%s]", value);
}
}
// return value means actually schedule or not
public boolean scheduleOrUpdate(final String id, ExtractionNamespace namespace) {
final NamespaceImplData implDatum = implData.get(id);
if (implDatum == null) {
// New, probably
schedule(id, namespace);
return true;
}
if (!implDatum.enabled.get()) {
// Race condition. Someone else disabled it first, go ahead and reschedule
schedule(id, namespace);
return true;
}
// Live one. Check if it needs updated
if (implDatum.namespace.equals(namespace)) {
// skip if no update
return false;
}
if (log.isDebugEnabled()) {
log.debug("Namespace [%s] needs updated to [%s]", implDatum.namespace, namespace);
}
removeNamespaceLocalMetadata(implDatum);
schedule(id, namespace);
return true;
}
@Override
public void log(Request request, Response response) {
if (logger.isDebugEnabled()) {
logger.debug(
"%s %s %s",
request.getMethod(), request.getUri().toString(), request.getProtocol().toString());
}
}
@LifecycleStop
public void stop() {
if (log4jShutdown != null) {
log.debug("Shutting down log4j");
log4jShutdown.stop();
} else {
log.warn("Log4j shutdown was registered in lifecycle but no shutdown object exists!");
}
}
public static void addNextRow(
final Supplier<Committer> committerSupplier,
final Firehose firehose,
final Plumber plumber,
final boolean reportParseExceptions,
final FireDepartmentMetrics metrics) {
try {
final InputRow inputRow = firehose.nextRow();
if (inputRow == null) {
if (reportParseExceptions) {
throw new ParseException("null input row");
} else {
log.debug("Discarded null input row, considering unparseable.");
metrics.incrementUnparseable();
return;
}
}
// Included in ParseException try/catch, as additional parsing can be done during indexing.
int numRows = plumber.add(inputRow, committerSupplier);
if (numRows == -1) {
metrics.incrementThrownAway();
log.debug("Discarded row[%s], considering thrownAway.", inputRow);
return;
}
metrics.incrementProcessed();
} catch (ParseException e) {
if (reportParseExceptions) {
throw e;
} else {
log.debug(e, "Discarded row due to exception, considering unparseable.");
metrics.incrementUnparseable();
}
} catch (IndexSizeExceededException e) {
// Shouldn't happen if this is only being called by a single thread.
// plumber.add should be swapping out indexes before they fill up.
throw new ISE(e, "WTF?! Index size exceeded, this shouldn't happen. Bad Plumber!");
}
}
/**
* Clears out resources used by the namespace such as threads. Implementations may override this
* and call super.delete(...) if they have resources of their own which need cleared.
*
* <p>This particular method is NOT thread safe, and any impl which is intended to be thread safe
* should safe-guard calls to this method.
*
* @param ns The namespace to be deleted
* @return True if a deletion occurred, false if no deletion occurred.
* @throws ISE if there is an error cancelling the namespace's future task
*/
public boolean delete(final String ns) {
final NamespaceImplData implDatum = implData.get(ns);
final boolean deleted = removeNamespaceLocalMetadata(implDatum);
// At this point we have won leader election on canceling this implDatum
if (deleted) {
log.info("Deleting namespace [%s]", ns);
lastVersion.remove(implDatum.name);
return true;
} else {
log.debug("Did not delete namespace [%s]", ns);
return false;
}
}
@Override
public String apply(final String key) {
if (key == null) {
return null;
}
final String presentVal;
try {
presentVal = loadingCache.get(key, new applyCallable(key));
return Strings.emptyToNull(presentVal);
} catch (ExecutionException e) {
LOGGER.debug("value not found for key [%s]", key);
return null;
}
}
@Override
public List<String> unapply(final String value) {
// null value maps to empty list
if (value == null) {
return Collections.EMPTY_LIST;
}
final List<String> retList;
try {
retList = reverseLoadingCache.get(value, new unapplyCallable(value));
return retList;
} catch (ExecutionException e) {
LOGGER.debug("list of keys not found for value [%s]", value);
return Collections.EMPTY_LIST;
}
}
@Override
public boolean delete(final String namespaceKey) {
final Lock lock = nsLocks.get(namespaceKey);
lock.lock();
try {
super.delete(namespaceKey);
final String mmapDBkey = currentNamespaceCache.get(namespaceKey);
if (mmapDBkey != null) {
final long pre = tmpFile.length();
mmapDB.delete(mmapDBkey);
dataSize.set(tmpFile.length());
log.debug("MapDB file size: pre %d post %d", pre, dataSize.get());
return true;
} else {
return false;
}
} finally {
lock.unlock();
}
}
@LifecycleStart
public void start() {
log.debug("Log4j shutter downer is waiting");
}
@Override
protected void map(String key, String value, final Context context)
throws IOException, InterruptedException {
final InputSplit split = context.getInputSplit();
if (!(split instanceof DatasourceInputSplit)) {
throw new IAE(
"Unexpected split type. Expected [%s] was [%s]",
DatasourceInputSplit.class.getCanonicalName(), split.getClass().getCanonicalName());
}
final String tmpDirLoc = context.getConfiguration().get(TMP_FILE_LOC_KEY);
final File tmpDir = Paths.get(tmpDirLoc).toFile();
final DataSegment segment =
Iterables.getOnlyElement(((DatasourceInputSplit) split).getSegments()).getSegment();
final HadoopDruidConverterConfig config =
converterConfigFromConfiguration(context.getConfiguration());
context.setStatus("DOWNLOADING");
context.progress();
final Path inPath = new Path(JobHelper.getURIFromSegment(segment));
final File inDir = new File(tmpDir, "in");
if (inDir.exists() && !inDir.delete()) {
log.warn("Could not delete [%s]", inDir);
}
if (!inDir.mkdir() && (!inDir.exists() || inDir.isDirectory())) {
log.warn("Unable to make directory");
}
final long inSize =
JobHelper.unzipNoGuava(inPath, context.getConfiguration(), inDir, context);
log.debug("Loaded %d bytes into [%s] for converting", inSize, inDir.getAbsolutePath());
context.getCounter(COUNTER_GROUP, COUNTER_LOADED).increment(inSize);
context.setStatus("CONVERTING");
context.progress();
final File outDir = new File(tmpDir, "out");
if (!outDir.mkdir() && (!outDir.exists() || !outDir.isDirectory())) {
throw new IOException(String.format("Could not create output directory [%s]", outDir));
}
HadoopDruidConverterConfig.INDEX_MERGER.convert(
inDir, outDir, config.getIndexSpec(), JobHelper.progressIndicatorForContext(context));
if (config.isValidate()) {
context.setStatus("Validating");
HadoopDruidConverterConfig.INDEX_IO.validateTwoSegments(inDir, outDir);
}
context.progress();
context.setStatus("Starting PUSH");
final Path baseOutputPath = new Path(config.getSegmentOutputPath());
final FileSystem outputFS = baseOutputPath.getFileSystem(context.getConfiguration());
final DataSegment finalSegmentTemplate =
segment.withVersion(segment.getVersion() + "_converted");
final DataSegment finalSegment =
JobHelper.serializeOutIndex(
finalSegmentTemplate,
context.getConfiguration(),
context,
context.getTaskAttemptID(),
outDir,
JobHelper.makeSegmentOutputPath(baseOutputPath, outputFS, finalSegmentTemplate));
context.progress();
context.setStatus("Finished PUSH");
final String finalSegmentString =
HadoopDruidConverterConfig.jsonMapper.writeValueAsString(finalSegment);
context
.getConfiguration()
.set(ConvertingOutputFormat.PUBLISHED_SEGMENT_KEY, finalSegmentString);
context.write(new Text("dataSegment"), new Text(finalSegmentString));
context.getCounter(COUNTER_GROUP, COUNTER_WRITTEN).increment(finalSegment.getSize());
context.progress();
context.setStatus("Ready To Commit");
}
// For testing purposes this is protected
protected <T extends ExtractionNamespace> ListenableFuture<?> schedule(
final String id,
final T namespace,
final ExtractionNamespaceCacheFactory<T> factory,
final Runnable postRunnable,
final String cacheId) {
log.debug("Trying to update namespace [%s]", id);
final NamespaceImplData implDatum = implData.get(id);
if (implDatum != null) {
synchronized (implDatum.enabled) {
if (implDatum.enabled.get()) {
// We also check at the end of the function, but fail fast here
throw new IAE(
"Namespace [%s] already exists! Leaving prior running", namespace.toString());
}
}
}
final long updateMs = namespace.getPollMs();
final CountDownLatch startLatch = new CountDownLatch(1);
final Runnable command =
new Runnable() {
@Override
public void run() {
try {
startLatch.await(); // wait for "election" to leadership or cancellation
if (!Thread.currentThread().isInterrupted()) {
final Map<String, String> cache = getCacheMap(cacheId);
final String preVersion = lastVersion.get(id);
final Callable<String> runnable =
factory.getCachePopulator(id, namespace, preVersion, cache);
tasksStarted.incrementAndGet();
final String newVersion = runnable.call();
if (preVersion != null && preVersion.equals(newVersion)) {
throw new CancellationException(
String.format("Version `%s` already exists", preVersion));
}
if (newVersion != null) {
lastVersion.put(id, newVersion);
}
postRunnable.run();
log.debug("Namespace [%s] successfully updated", id);
}
} catch (Throwable t) {
delete(cacheId);
if (t instanceof CancellationException) {
log.debug(t, "Namespace [%s] cancelled", id);
} else {
log.error(t, "Failed update namespace [%s]", namespace);
}
if (Thread.currentThread().isInterrupted()) {
throw Throwables.propagate(t);
}
}
}
};
ListenableFuture<?> future;
try {
if (updateMs > 0) {
future =
listeningScheduledExecutorService.scheduleAtFixedRate(
command, 0, updateMs, TimeUnit.MILLISECONDS);
} else {
future = listeningScheduledExecutorService.schedule(command, 0, TimeUnit.MILLISECONDS);
}
final NamespaceImplData me = new NamespaceImplData(future, namespace, id);
final NamespaceImplData other = implData.putIfAbsent(id, me);
if (other != null) {
if (!future.isDone() && !future.cancel(true)) {
log.warn("Unable to cancel future for namespace[%s] on race loss", id);
}
throw new IAE("Namespace [%s] already exists! Leaving prior running", namespace);
} else {
if (!me.enabled.compareAndSet(false, true)) {
log.wtf("How did someone enable this before ME?");
}
log.debug("I own namespace [%s]", id);
return future;
}
} finally {
startLatch.countDown();
}
}
