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yacy_search_server
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better scaling of HEAP dump writer for small memory configurations;

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should prevent OOMs during cache dumps

git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@5920 6c8d7289-2bf4-0310-a012-ef5d649a1542
pull/1/head
orbiter 16 years ago
parent 6e0b57284d
commit 21fbca0410
7 changed files with 32 additions and 21 deletions
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8
source/de/anomic/kelondro/blob/BLOBArray.java
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@ -559,16 +559,16 @@ public class BLOBArray implements BLOB {
blobs = null;
}
public File mergeMount(File f1, File f2, ReferenceFactory<?> factory, Row payloadrow, File newFile) throws IOException {
public File mergeMount(File f1, File f2, ReferenceFactory<?> factory, Row payloadrow, File newFile, int writeBuffer) throws IOException {
Log.logInfo("BLOBArray", "merging " + f1.getName() + " with " + f2.getName());
File resultFile = mergeWorker(factory, this.keylength, this.ordering, f1, f2, payloadrow, newFile);
File resultFile = mergeWorker(factory, this.keylength, this.ordering, f1, f2, payloadrow, newFile, writeBuffer);
if (resultFile == null) return null;
mountBLOB(resultFile, false);
Log.logInfo("BLOBArray", "merged " + f1.getName() + " with " + f2.getName() + " into " + resultFile);
return resultFile;
}
private static <ReferenceType extends Reference> File mergeWorker(ReferenceFactory<ReferenceType> factory, int keylength, ByteOrder order, File f1, File f2, Row payloadrow, File newFile) throws IOException {
private static <ReferenceType extends Reference> File mergeWorker(ReferenceFactory<ReferenceType> factory, int keylength, ByteOrder order, File f1, File f2, Row payloadrow, File newFile, int writeBuffer) throws IOException {
// iterate both files and write a new one
CloneableIterator<ReferenceContainer<ReferenceType>> i1 = new blobFileEntries<ReferenceType>(f1, factory, payloadrow);
@ -591,7 +591,7 @@ public class BLOBArray implements BLOB {
assert i1.hasNext();
assert i2.hasNext();
File tmpFile = new File(newFile.getParentFile(), newFile.getName() + ".tmp");
HeapWriter writer = new HeapWriter(tmpFile, newFile, keylength, order);
HeapWriter writer = new HeapWriter(tmpFile, newFile, keylength, order, writeBuffer);
merge(i1, i2, order, writer);
try {
writer.close(true);

4
source/de/anomic/kelondro/blob/HeapWriter.java
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@ -72,12 +72,12 @@ public final class HeapWriter {
* @param ordering
* @throws IOException
*/
public HeapWriter(final File temporaryHeapFile, final File readyHeapFile, final int keylength, final ByteOrder ordering) throws IOException {
public HeapWriter(final File temporaryHeapFile, final File readyHeapFile, final int keylength, final ByteOrder ordering, int outBuffer) throws IOException {
this.heapFileTMP = temporaryHeapFile;
this.heapFileREADY = readyHeapFile;
this.keylength = keylength;
this.index = new LongHandleIndex(keylength, ordering, 10, 100000);
this.os = new DataOutputStream(new BufferedOutputStream(new FileOutputStream(temporaryHeapFile), 8 * 1024 * 1024));
this.os = new DataOutputStream(new BufferedOutputStream(new FileOutputStream(temporaryHeapFile), outBuffer));
//this.doublecheck = new HashSet<String>();
this.seek = 0;
}

17
source/de/anomic/kelondro/text/IODispatcher.java
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@ -32,6 +32,7 @@ import java.util.concurrent.Semaphore;
import de.anomic.kelondro.blob.BLOBArray;
import de.anomic.kelondro.index.Row;
import de.anomic.kelondro.util.Log;
import de.anomic.kelondro.util.MemoryControl;
/**
* this is a concurrent merger that can merge single files that are queued for merging.
@ -53,13 +54,15 @@ public class IODispatcher <ReferenceType extends Reference> extends Thread {
private ArrayBlockingQueue<DumpJob> dumpQueue;
private ReferenceFactory<ReferenceType> factory;
private boolean terminate;
private int writeBufferSize;
public IODispatcher(ReferenceFactory<ReferenceType> factory, int dumpQueueLength, int mergeQueueLength) {
public IODispatcher(ReferenceFactory<ReferenceType> factory, int dumpQueueLength, int mergeQueueLength, int writeBufferSize) {
this.factory = factory;
this.termination = new Semaphore(0);
this.controlQueue = new Semaphore(0);
this.dumpQueue = new ArrayBlockingQueue<DumpJob>(dumpQueueLength);
this.mergeQueue = new ArrayBlockingQueue<MergeJob>(mergeQueueLength);
this.writeBufferSize = writeBufferSize;
this.terminate = false;
}
@ -79,7 +82,7 @@ public class IODispatcher <ReferenceType extends Reference> extends Thread {
public synchronized void dump(ReferenceContainerCache<ReferenceType> cache, File file, ReferenceContainerArray<ReferenceType> array) {
if (dumpQueue == null || controlQueue == null || !this.isAlive()) {
Log.logWarning("IODispatcher", "emergency dump of file " + file.getName());
cache.dump(file);
cache.dump(file, (int) Math.min(MemoryControl.available() / 3, writeBufferSize));
} else {
DumpJob job = new DumpJob(cache, file, array);
try {
@ -88,7 +91,7 @@ public class IODispatcher <ReferenceType extends Reference> extends Thread {
Log.logInfo("IODispatcher", "appended dump job for file " + file.getName());
} catch (InterruptedException e) {
e.printStackTrace();
cache.dump(file);
cache.dump(file, (int) Math.min(MemoryControl.available() / 3, writeBufferSize));
}
}
}
@ -101,7 +104,7 @@ public class IODispatcher <ReferenceType extends Reference> extends Thread {
if (mergeQueue == null || controlQueue == null || !this.isAlive()) {
try {
Log.logWarning("IODispatcher", "emergency merge of files " + f1.getName() + ", " + f2.getName() + " to " + newFile.getName());
array.mergeMount(f1, f2, factory, payloadrow, newFile);
array.mergeMount(f1, f2, factory, payloadrow, newFile, (int) Math.min(MemoryControl.available() / 3, writeBufferSize));
} catch (IOException e) {
e.printStackTrace();
}
@ -114,7 +117,7 @@ public class IODispatcher <ReferenceType extends Reference> extends Thread {
} catch (InterruptedException e) {
e.printStackTrace();
try {
array.mergeMount(f1, f2, factory, payloadrow, newFile);
array.mergeMount(f1, f2, factory, payloadrow, newFile, (int) Math.min(MemoryControl.available() / 3, writeBufferSize));
} catch (IOException ee) {
ee.printStackTrace();
}
@ -189,7 +192,7 @@ public class IODispatcher <ReferenceType extends Reference> extends Thread {
}
public void dump() {
try {
cache.dump(file);
cache.dump(file, (int) Math.min(MemoryControl.available() / 3, writeBufferSize));
array.mountBLOBFile(file);
} catch (IOException e) {
e.printStackTrace();
@ -221,7 +224,7 @@ public class IODispatcher <ReferenceType extends Reference> extends Thread {
return null;
}
try {
return array.mergeMount(f1, f2, factory, payloadrow, newFile);
return array.mergeMount(f1, f2, factory, payloadrow, newFile, (int) Math.min(MemoryControl.available() / 3, writeBufferSize));
} catch (IOException e) {
e.printStackTrace();
}

7
source/de/anomic/kelondro/text/IndexCell.java
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@ -61,6 +61,7 @@ public final class IndexCell<ReferenceType extends Reference> extends AbstractBu
private final IODispatcher<ReferenceType> merger;
private long lastCleanup;
private final long targetFileSize, maxFileSize;
private final int writeBufferSize;
public IndexCell(
@ -71,7 +72,8 @@ public final class IndexCell<ReferenceType extends Reference> extends AbstractBu
final int maxRamEntries,
final long targetFileSize,
final long maxFileSize,
IODispatcher<ReferenceType> merger
IODispatcher<ReferenceType> merger,
int writeBufferSize
) throws IOException {
super(factory);
@ -83,6 +85,7 @@ public final class IndexCell<ReferenceType extends Reference> extends AbstractBu
this.lastCleanup = System.currentTimeMillis();
this.targetFileSize = targetFileSize;
this.maxFileSize = maxFileSize;
this.writeBufferSize = writeBufferSize;
cleanCache();
}
@ -251,7 +254,7 @@ public final class IndexCell<ReferenceType extends Reference> extends AbstractBu
* and is composed of the current date and the cell salt
*/
public synchronized void close() {
this.ram.dump(this.array.newContainerBLOBFile());
this.ram.dump(this.array.newContainerBLOBFile(), (int) Math.min(MemoryControl.available() / 3, writeBufferSize));
// close all
this.ram.close();
this.array.close();

4
source/de/anomic/kelondro/text/IndexCollectionMigration.java
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@ -60,6 +60,7 @@ public final class IndexCollectionMigration<ReferenceType extends Reference> ext
final long targetFileSize,
final long maxFileSize,
final IODispatcher<ReferenceType> merger,
final int writeBufferSize,
final Log log) throws IOException {
super(factory);
@ -73,7 +74,8 @@ public final class IndexCollectionMigration<ReferenceType extends Reference> ext
entityCacheMaxSize,
targetFileSize,
maxFileSize,
this.merger);
this.merger,
writeBufferSize);
final File textindexcache = new File(indexPrimaryTextLocation, "RICACHE");
if (textindexcache.exists()) {
// migrate the "index.dhtout.blob" into RICELL directory

4
source/de/anomic/kelondro/text/ReferenceContainerCache.java
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@ -115,14 +115,14 @@ public final class ReferenceContainerCache<ReferenceType extends Reference> exte
Log.logInfo("indexContainerRAMHeap", "finished rwi blob restore: " + cache.size() + " words, " + urlCount + " word/URL relations in " + (System.currentTimeMillis() - start) + " milliseconds");
}
public void dump(final File heapFile) {
public void dump(final File heapFile, int writeBuffer) {
assert this.cache != null;
Log.logInfo("indexContainerRAMHeap", "creating rwi heap dump '" + heapFile.getName() + "', " + cache.size() + " rwi's");
if (heapFile.exists()) FileUtils.deletedelete(heapFile);
File tmpFile = new File(heapFile.getParentFile(), heapFile.getName() + ".tmp");
HeapWriter dump;
try {
dump = new HeapWriter(tmpFile, heapFile, payloadrow.primaryKeyLength, Base64Order.enhancedCoder);
dump = new HeapWriter(tmpFile, heapFile, payloadrow.primaryKeyLength, Base64Order.enhancedCoder, writeBuffer);
} catch (IOException e1) {
e1.printStackTrace();
return;

9
source/de/anomic/plasma/plasmaWordIndex.java
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@ -75,6 +75,7 @@ public final class plasmaWordIndex {
public static final int maxCollectionPartition = 7; // should be 7
public static final long targetFileSize = 100 * 1024 * 1024; // 100 MB
public static final long maxFileSize = BLOBArray.oneGigabyte; // 1GB
public static final int writeBufferSize = 4 * 1024 * 1024;
// the reference factory
public static final ReferenceFactory<WordReference> wordReferenceFactory = new WordReferenceFactory();
@ -152,7 +153,7 @@ public final class plasmaWordIndex {
// check if the peer has migrated the index
if (new File(indexPrimaryTextLocation, "RICOLLECTION").exists()) {
this.merger = new IODispatcher<WordReference>(plasmaWordIndex.wordReferenceFactory, 1, 1);
this.merger = new IODispatcher<WordReference>(plasmaWordIndex.wordReferenceFactory, 1, 1, writeBufferSize);
if (this.merger != null) this.merger.start();
this.index = new IndexCollectionMigration<WordReference>(
indexPrimaryTextLocation,
@ -163,9 +164,10 @@ public final class plasmaWordIndex {
targetFileSize,
maxFileSize,
this.merger,
writeBufferSize,
log);
} else {
this.merger = new IODispatcher<WordReference>(plasmaWordIndex.wordReferenceFactory, 1, 1);
this.merger = new IODispatcher<WordReference>(plasmaWordIndex.wordReferenceFactory, 1, 1, writeBufferSize);
this.merger.start();
this.index = new IndexCell<WordReference>(
new File(indexPrimaryTextLocation, "RICELL"),
@ -175,7 +177,8 @@ public final class plasmaWordIndex {
entityCacheMaxSize,
targetFileSize,
maxFileSize,
this.merger);
this.merger,
writeBufferSize);
}

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