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HBASE-20559 Backport HBASE-18083 (Make large/small file clean thread …
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…number configurable in HFileCleaner) to branch-1

The last port commit of HBASE-20555

Signed-off-by: Yu Li <[email protected]>
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@carp84
TAK LON WU authored and carp84 committed Jul 23, 2018
1 parent 780724b commit 896b69a
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Showing 2 changed files with 120 additions and 47 deletions.
154 changes: 108 additions & 46 deletions hbase-server/src/main/java/org/apache/hadoop/hbase/master/cleaner/HFileCleaner.java
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Original file line number Diff line number Diff line change
Expand Up @@ -23,6 +23,7 @@
import java.util.List;
import java.util.Map;
import java.util.concurrent.BlockingQueue;
import java.util.concurrent.atomic.AtomicLong;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.hadoop.conf.Configuration;
Expand Down Expand Up @@ -66,18 +67,30 @@ public HFileCleaner(final int period, final Stoppable stopper, Configuration con
"hbase.regionserver.hfilecleaner.small.queue.size";
public final static int DEFAULT_SMALL_HFILE_QUEUE_INIT_SIZE = 10240;

// Configuration key for large file delete thread number
public final static String LARGE_HFILE_DELETE_THREAD_NUMBER =
"hbase.regionserver.hfilecleaner.large.thread.count";
public final static int DEFAULT_LARGE_HFILE_DELETE_THREAD_NUMBER = 1;

// Configuration key for small file delete thread number
public final static String SMALL_HFILE_DELETE_THREAD_NUMBER =
"hbase.regionserver.hfilecleaner.small.thread.count";
public final static int DEFAULT_SMALL_HFILE_DELETE_THREAD_NUMBER = 1;

private static final Log LOG = LogFactory.getLog(HFileCleaner.class);

StealJobQueue<HFileDeleteTask> largeFileQueue;
BlockingQueue<HFileDeleteTask> smallFileQueue;
private int throttlePoint;
private int largeQueueInitSize;
private int smallQueueInitSize;
private int largeFileDeleteThreadNumber;
private int smallFileDeleteThreadNumber;
private List<Thread> threads = new ArrayList<Thread>();
private boolean running;

private long deletedLargeFiles = 0L;
private long deletedSmallFiles = 0L;
private AtomicLong deletedLargeFiles = new AtomicLong();
private AtomicLong deletedSmallFiles = new AtomicLong();

/**
* @param period the period of time to sleep between each run
Expand All @@ -99,6 +112,10 @@ public HFileCleaner(final int period, final Stoppable stopper, Configuration con
conf.getInt(SMALL_HFILE_QUEUE_INIT_SIZE, DEFAULT_SMALL_HFILE_QUEUE_INIT_SIZE);
largeFileQueue = new StealJobQueue<>(largeQueueInitSize, smallQueueInitSize);
smallFileQueue = largeFileQueue.getStealFromQueue();
largeFileDeleteThreadNumber =
conf.getInt(LARGE_HFILE_DELETE_THREAD_NUMBER, DEFAULT_LARGE_HFILE_DELETE_THREAD_NUMBER);
smallFileDeleteThreadNumber =
conf.getInt(SMALL_HFILE_DELETE_THREAD_NUMBER, DEFAULT_SMALL_HFILE_DELETE_THREAD_NUMBER);
startHFileDeleteThreads();
}

Expand Down Expand Up @@ -182,30 +199,34 @@ private void startHFileDeleteThreads() {
final String n = Thread.currentThread().getName();
running = true;
// start thread for large file deletion
Thread large = new Thread() {
@Override
public void run() {
consumerLoop(largeFileQueue);
}
};
large.setDaemon(true);
large.setName(n + "-HFileCleaner.large-" + System.currentTimeMillis());
large.start();
LOG.debug("Starting hfile cleaner for large files: " + large.getName());
threads.add(large);
for (int i = 0; i < largeFileDeleteThreadNumber; i++) {
Thread large = new Thread() {
@Override
public void run() {
consumerLoop(largeFileQueue);
}
};
large.setDaemon(true);
large.setName(n + "-HFileCleaner.large." + i + "-" + System.currentTimeMillis());
large.start();
LOG.debug("Starting hfile cleaner for large files: " + large.getName());
threads.add(large);
}

// start thread for small file deletion
Thread small = new Thread() {
@Override
public void run() {
consumerLoop(smallFileQueue);
}
};
small.setDaemon(true);
small.setName(n + "-HFileCleaner.small-" + System.currentTimeMillis());
small.start();
LOG.debug("Starting hfile cleaner for small files: " + small.getName());
threads.add(small);
for (int i = 0; i < smallFileDeleteThreadNumber; i++) {
Thread small = new Thread() {
@Override
public void run() {
consumerLoop(smallFileQueue);
}
};
small.setDaemon(true);
small.setName(n + "-HFileCleaner.small." + i + "-" + System.currentTimeMillis());
small.start();
LOG.debug("Starting hfile cleaner for small files: " + small.getName());
threads.add(small);
}
}

protected void consumerLoop(BlockingQueue<HFileDeleteTask> queue) {
Expand Down Expand Up @@ -247,20 +268,20 @@ protected void consumerLoop(BlockingQueue<HFileDeleteTask> queue) {
// Currently only for testing purpose
private void countDeletedFiles(boolean isLargeFile, boolean fromLargeQueue) {
if (isLargeFile) {
if (deletedLargeFiles == Long.MAX_VALUE) {
if (deletedLargeFiles.get() == Long.MAX_VALUE) {
LOG.info("Deleted more than Long.MAX_VALUE large files, reset counter to 0");
deletedLargeFiles = 0L;
deletedLargeFiles.set(0L);
}
deletedLargeFiles++;
deletedLargeFiles.incrementAndGet();
} else {
if (deletedSmallFiles == Long.MAX_VALUE) {
if (deletedSmallFiles.get() == Long.MAX_VALUE) {
LOG.info("Deleted more than Long.MAX_VALUE small files, reset counter to 0");
deletedSmallFiles = 0L;
deletedSmallFiles.set(0L);
}
if (fromLargeQueue && LOG.isTraceEnabled()) {
LOG.trace("Stolen a small file deletion task in large file thread");
}
deletedSmallFiles++;
deletedSmallFiles.incrementAndGet();
}
}

Expand Down Expand Up @@ -353,12 +374,12 @@ public List<Thread> getCleanerThreads() {

@VisibleForTesting
public long getNumOfDeletedLargeFiles() {
return deletedLargeFiles;
return deletedLargeFiles.get();
}

@VisibleForTesting
public long getNumOfDeletedSmallFiles() {
return deletedSmallFiles;
return deletedSmallFiles.get();
}

@VisibleForTesting
Expand All @@ -378,19 +399,14 @@ public long getThrottlePoint() {

@Override
public void onConfigurationChange(Configuration conf) {
StringBuilder builder = new StringBuilder();
builder.append("Updating configuration for HFileCleaner, previous throttle point: ")
.append(throttlePoint).append(", largeQueueInitSize: ").append(largeQueueInitSize)
.append(", smallQueueInitSize: ").append(smallQueueInitSize);
if (!checkAndUpdateConfigurations(conf)) {
LOG.debug("Update configuration triggered but nothing changed for this cleaner");
return;
}
stopHFileDeleteThreads();
this.throttlePoint =
conf.getInt(HFILE_DELETE_THROTTLE_THRESHOLD, DEFAULT_HFILE_DELETE_THROTTLE_THRESHOLD);
this.largeQueueInitSize =
conf.getInt(LARGE_HFILE_QUEUE_INIT_SIZE, DEFAULT_LARGE_HFILE_QUEUE_INIT_SIZE);
this.smallQueueInitSize =
conf.getInt(SMALL_HFILE_QUEUE_INIT_SIZE, DEFAULT_SMALL_HFILE_QUEUE_INIT_SIZE);
// record the left over tasks
List<HFileDeleteTask> leftOverTasks = new ArrayList<>();
List<HFileDeleteTask> leftOverTasks =
new ArrayList<>(largeFileQueue.size() + smallFileQueue.size());
for (HFileDeleteTask task : largeFileQueue) {
leftOverTasks.add(task);
}
Expand All @@ -400,13 +416,59 @@ public void onConfigurationChange(Configuration conf) {
largeFileQueue = new StealJobQueue<>(largeQueueInitSize, smallQueueInitSize);
smallFileQueue = largeFileQueue.getStealFromQueue();
threads.clear();
builder.append("; new throttle point: ").append(throttlePoint).append(", largeQueueInitSize: ")
.append(largeQueueInitSize).append(", smallQueueInitSize: ").append(smallQueueInitSize);
LOG.debug(builder.toString());
startHFileDeleteThreads();
// re-dispatch the left over tasks
for (HFileDeleteTask task : leftOverTasks) {
dispatch(task);
}
}

/**
* Check new configuration and update settings if value changed
* @param conf The new configuration
* @return true if any configuration for HFileCleaner changes, false if no change
*/
private boolean checkAndUpdateConfigurations(Configuration conf) {
boolean updated = false;
int throttlePoint =
conf.getInt(HFILE_DELETE_THROTTLE_THRESHOLD, DEFAULT_HFILE_DELETE_THROTTLE_THRESHOLD);
if (throttlePoint != this.throttlePoint) {
LOG.debug("Updating throttle point, from " + this.throttlePoint + " to " + throttlePoint);
this.throttlePoint = throttlePoint;
updated = true;
}
int largeQueueInitSize =
conf.getInt(LARGE_HFILE_QUEUE_INIT_SIZE, DEFAULT_LARGE_HFILE_QUEUE_INIT_SIZE);
if (largeQueueInitSize != this.largeQueueInitSize) {
LOG.debug("Updating largeQueueInitSize, from " + this.largeQueueInitSize + " to "
+ largeQueueInitSize);
this.largeQueueInitSize = largeQueueInitSize;
updated = true;
}
int smallQueueInitSize =
conf.getInt(SMALL_HFILE_QUEUE_INIT_SIZE, DEFAULT_SMALL_HFILE_QUEUE_INIT_SIZE);
if (smallQueueInitSize != this.smallQueueInitSize) {
LOG.debug("Updating smallQueueInitSize, from " + this.smallQueueInitSize + " to "
+ smallQueueInitSize);
this.smallQueueInitSize = smallQueueInitSize;
updated = true;
}
int largeFileDeleteThreadNumber =
conf.getInt(LARGE_HFILE_DELETE_THREAD_NUMBER, DEFAULT_LARGE_HFILE_DELETE_THREAD_NUMBER);
if (largeFileDeleteThreadNumber != this.largeFileDeleteThreadNumber) {
LOG.debug("Updating largeFileDeleteThreadNumber, from " + this.largeFileDeleteThreadNumber
+ " to " + largeFileDeleteThreadNumber);
this.largeFileDeleteThreadNumber = largeFileDeleteThreadNumber;
updated = true;
}
int smallFileDeleteThreadNumber =
conf.getInt(SMALL_HFILE_DELETE_THREAD_NUMBER, DEFAULT_SMALL_HFILE_DELETE_THREAD_NUMBER);
if (smallFileDeleteThreadNumber != this.smallFileDeleteThreadNumber) {
LOG.debug("Updating smallFileDeleteThreadNumber, from " + this.smallFileDeleteThreadNumber
+ " to " + smallFileDeleteThreadNumber);
this.smallFileDeleteThreadNumber = smallFileDeleteThreadNumber;
updated = true;
}
return updated;
}
}
13 changes: 12 additions & 1 deletion hbase-server/src/test/java/org/apache/hadoop/hbase/master/cleaner/TestHFileCleaner.java
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Original file line number Diff line number Diff line change
Expand Up @@ -22,6 +22,7 @@
import static org.junit.Assert.assertTrue;

import java.io.IOException;
import java.util.List;
import java.util.Random;

import org.apache.commons.logging.Log;
Expand Down Expand Up @@ -321,6 +322,8 @@ public void testOnConfigurationChange() throws Exception {
final int UPDATE_QUEUE_INIT_SIZE = 1024;
final int LARGE_FILE_NUM = 5;
final int SMALL_FILE_NUM = 20;
final int LARGE_THREAD_NUM = 2;
final int SMALL_THREAD_NUM = 4;

Configuration conf = UTIL.getConfiguration();
// no cleaner policies = delete all files
Expand Down Expand Up @@ -363,6 +366,8 @@ public void run() {
newConf.setInt(HFileCleaner.HFILE_DELETE_THROTTLE_THRESHOLD, UPDATE_THROTTLE_POINT);
newConf.setInt(HFileCleaner.LARGE_HFILE_QUEUE_INIT_SIZE, UPDATE_QUEUE_INIT_SIZE);
newConf.setInt(HFileCleaner.SMALL_HFILE_QUEUE_INIT_SIZE, UPDATE_QUEUE_INIT_SIZE);
newConf.setInt(HFileCleaner.LARGE_HFILE_DELETE_THREAD_NUMBER, LARGE_THREAD_NUM);
newConf.setInt(HFileCleaner.SMALL_HFILE_DELETE_THREAD_NUMBER, SMALL_THREAD_NUM);
LOG.debug("File deleted from large queue: " + cleaner.getNumOfDeletedLargeFiles()
+ "; from small queue: " + cleaner.getNumOfDeletedSmallFiles());
cleaner.onConfigurationChange(newConf);
Expand All @@ -371,7 +376,13 @@ public void run() {
Assert.assertEquals(UPDATE_THROTTLE_POINT, cleaner.getThrottlePoint());
Assert.assertEquals(UPDATE_QUEUE_INIT_SIZE, cleaner.getLargeQueueInitSize());
Assert.assertEquals(UPDATE_QUEUE_INIT_SIZE, cleaner.getSmallQueueInitSize());
Assert.assertEquals(2, cleaner.getCleanerThreads().size());
Assert.assertEquals(LARGE_THREAD_NUM + SMALL_THREAD_NUM, cleaner.getCleanerThreads().size());

// make sure no cost when onConfigurationChange called with no change
List<Thread> oldThreads = cleaner.getCleanerThreads();
cleaner.onConfigurationChange(newConf);
List<Thread> newThreads = cleaner.getCleanerThreads();
Assert.assertArrayEquals(oldThreads.toArray(), newThreads.toArray());

// wait until clean done and check
t.join();
Expand Down

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