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Posted to commits@accumulo.apache.org by el...@apache.org on 2014/05/28 22:51:42 UTC
[09/32] git commit: Merge branch '1.5.2-SNAPSHOT' into 1.6.1-SNAPSHOT
Merge branch '1.5.2-SNAPSHOT' into 1.6.1-SNAPSHOT
Conflicts:
core/src/main/java/org/apache/accumulo/core/conf/Property.java
server/tserver/src/main/java/org/apache/accumulo/tserver/log/DfsLogger.java
Project: http://git-wip-us.apache.org/repos/asf/accumulo/repo
Commit: http://git-wip-us.apache.org/repos/asf/accumulo/commit/2bf3ebb3
Tree: http://git-wip-us.apache.org/repos/asf/accumulo/tree/2bf3ebb3
Diff: http://git-wip-us.apache.org/repos/asf/accumulo/diff/2bf3ebb3
Branch: refs/heads/ACCUMULO-378
Commit: 2bf3ebb3db07a0c6b57e311037e467a147faefa0
Parents: adaf146 f654e7f
Author: Josh Elser <el...@apache.org>
Authored: Fri May 23 15:50:49 2014 -0400
Committer: Josh Elser <el...@apache.org>
Committed: Fri May 23 15:50:49 2014 -0400
----------------------------------------------------------------------
.../main/java/org/apache/accumulo/core/conf/Property.java | 5 ++++-
.../java/org/apache/accumulo/tserver/log/DfsLogger.java | 10 ++++++----
2 files changed, 10 insertions(+), 5 deletions(-)
----------------------------------------------------------------------
http://git-wip-us.apache.org/repos/asf/accumulo/blob/2bf3ebb3/core/src/main/java/org/apache/accumulo/core/conf/Property.java
----------------------------------------------------------------------
diff --cc core/src/main/java/org/apache/accumulo/core/conf/Property.java
index 47d1817,3d82046..2ade366
--- a/core/src/main/java/org/apache/accumulo/core/conf/Property.java
+++ b/core/src/main/java/org/apache/accumulo/core/conf/Property.java
@@@ -262,16 -201,19 +262,19 @@@ public enum Property
TSERV_SORT_BUFFER_SIZE("tserver.sort.buffer.size", "200M", PropertyType.MEMORY, "The amount of memory to use when sorting logs during recovery."),
TSERV_ARCHIVE_WALOGS("tserver.archive.walogs", "false", PropertyType.BOOLEAN, "Keep copies of the WALOGs for debugging purposes"),
TSERV_WORKQ_THREADS("tserver.workq.threads", "2", PropertyType.COUNT,
- "The number of threads for the distributed workq. These threads are used for copying failed bulk files."),
+ "The number of threads for the distributed work queue. These threads are used for copying failed bulk files."),
TSERV_WAL_SYNC("tserver.wal.sync", "true", PropertyType.BOOLEAN,
"Use the SYNC_BLOCK create flag to sync WAL writes to disk. Prevents problems recovering from sudden system resets."),
-
+ TSERV_WAL_SYNC_METHOD("tserver.wal.sync.method", "hsync", PropertyType.STRING, "The method to invoke when sync'ing WALs. HSync will provide " +
+ "resiliency in the face of unexpected power outages, at the cost of speed. If method is not available, the legacy 'sync' method " +
+ "will be used to ensure backwards compatibility with older Hadoop versions"),
-
++
// properties that are specific to logger server behavior
LOGGER_PREFIX("logger.", null, PropertyType.PREFIX, "Properties in this category affect the behavior of the write-ahead logger servers"),
- LOGGER_DIR("logger.dir.walog", "walogs", PropertyType.PATH,
- "The property only needs to be set if upgrading from 1.4 which used to store write-ahead logs on the local filesystem. In 1.5 write-ahead logs are "
- + "stored in DFS. When 1.5 is started for the first time it will copy any 1.4 write ahead logs into DFS. It is possible to specify a "
- + "comma-separated list of directories."),
+ LOGGER_DIR("logger.dir.walog", "walogs", PropertyType.PATH, "This property is only needed if Accumulo was upgraded from a 1.4 or earlier version. "
+ + "In the upgrade to 1.5 this property is used to copy any earlier write ahead logs into DFS. "
+ + "In 1.6+, this property is used by the LocalWALRecovery utility in the event that something went wrong with that earlier upgrade. "
+ + "It is possible to specify a comma-separated list of directories."),
// accumulo garbage collector properties
GC_PREFIX("gc.", null, PropertyType.PREFIX, "Properties in this category affect the behavior of the accumulo garbage collector."),
http://git-wip-us.apache.org/repos/asf/accumulo/blob/2bf3ebb3/server/tserver/src/main/java/org/apache/accumulo/tserver/log/DfsLogger.java
----------------------------------------------------------------------
diff --cc server/tserver/src/main/java/org/apache/accumulo/tserver/log/DfsLogger.java
index 61c1059,0000000..71dccc0
mode 100644,000000..100644
--- a/server/tserver/src/main/java/org/apache/accumulo/tserver/log/DfsLogger.java
+++ b/server/tserver/src/main/java/org/apache/accumulo/tserver/log/DfsLogger.java
@@@ -1,557 -1,0 +1,559 @@@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.accumulo.tserver.log;
+
+import static org.apache.accumulo.tserver.logger.LogEvents.COMPACTION_FINISH;
+import static org.apache.accumulo.tserver.logger.LogEvents.COMPACTION_START;
+import static org.apache.accumulo.tserver.logger.LogEvents.DEFINE_TABLET;
+import static org.apache.accumulo.tserver.logger.LogEvents.MANY_MUTATIONS;
+import static org.apache.accumulo.tserver.logger.LogEvents.OPEN;
+
+import java.io.DataInputStream;
+import java.io.DataOutputStream;
+import java.io.IOException;
+import java.io.OutputStream;
+import java.lang.reflect.InvocationTargetException;
+import java.lang.reflect.Method;
+import java.nio.channels.ClosedChannelException;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.Collections;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import java.util.Set;
+import java.util.UUID;
+import java.util.concurrent.CountDownLatch;
+import java.util.concurrent.LinkedBlockingQueue;
+
+import org.apache.accumulo.core.Constants;
+import org.apache.accumulo.core.conf.AccumuloConfiguration;
+import org.apache.accumulo.core.conf.Property;
+import org.apache.accumulo.core.data.KeyExtent;
+import org.apache.accumulo.core.data.Mutation;
+import org.apache.accumulo.core.security.crypto.CryptoModule;
+import org.apache.accumulo.core.security.crypto.CryptoModuleFactory;
+import org.apache.accumulo.core.security.crypto.CryptoModuleParameters;
+import org.apache.accumulo.core.security.crypto.DefaultCryptoModule;
+import org.apache.accumulo.core.security.crypto.NoFlushOutputStream;
+import org.apache.accumulo.core.util.Daemon;
+import org.apache.accumulo.core.util.Pair;
+import org.apache.accumulo.core.util.StringUtil;
+import org.apache.accumulo.server.ServerConstants;
+import org.apache.accumulo.server.fs.VolumeManager;
+import org.apache.accumulo.server.master.state.TServerInstance;
+import org.apache.accumulo.tserver.TabletMutations;
+import org.apache.accumulo.tserver.logger.LogFileKey;
+import org.apache.accumulo.tserver.logger.LogFileValue;
+import org.apache.hadoop.fs.FSDataInputStream;
+import org.apache.hadoop.fs.FSDataOutputStream;
+import org.apache.hadoop.fs.Path;
+import org.apache.log4j.Logger;
+
+/**
+ * Wrap a connection to a logger.
+ *
+ */
+public class DfsLogger {
+ // Package private so that LogSorter can find this
+ static final String LOG_FILE_HEADER_V2 = "--- Log File Header (v2) ---";
+ static final String LOG_FILE_HEADER_V3 = "--- Log File Header (v3) ---";
+
+ private static Logger log = Logger.getLogger(DfsLogger.class);
+
+ public static class LogClosedException extends IOException {
+ private static final long serialVersionUID = 1L;
+
+ public LogClosedException() {
+ super("LogClosed");
+ }
+ }
+
+ public static class DFSLoggerInputStreams {
+
+ private FSDataInputStream originalInput;
+ private DataInputStream decryptingInputStream;
+
+ public DFSLoggerInputStreams(FSDataInputStream originalInput, DataInputStream decryptingInputStream) {
+ this.originalInput = originalInput;
+ this.decryptingInputStream = decryptingInputStream;
+ }
+
+ public FSDataInputStream getOriginalInput() {
+ return originalInput;
+ }
+
+ public void setOriginalInput(FSDataInputStream originalInput) {
+ this.originalInput = originalInput;
+ }
+
+ public DataInputStream getDecryptingInputStream() {
+ return decryptingInputStream;
+ }
+
+ public void setDecryptingInputStream(DataInputStream decryptingInputStream) {
+ this.decryptingInputStream = decryptingInputStream;
+ }
+ }
+
+ public interface ServerResources {
+ AccumuloConfiguration getConfiguration();
+
+ VolumeManager getFileSystem();
+
+ Set<TServerInstance> getCurrentTServers();
+ }
+
+ private final LinkedBlockingQueue<DfsLogger.LogWork> workQueue = new LinkedBlockingQueue<DfsLogger.LogWork>();
+
+ private final Object closeLock = new Object();
+
+ private static final DfsLogger.LogWork CLOSED_MARKER = new DfsLogger.LogWork(null);
+
+ private static final LogFileValue EMPTY = new LogFileValue();
+
+ private boolean closed = false;
+
+ private class LogSyncingTask implements Runnable {
+
+ @Override
+ public void run() {
+ ArrayList<DfsLogger.LogWork> work = new ArrayList<DfsLogger.LogWork>();
+ while (true) {
+ work.clear();
+
+ try {
+ work.add(workQueue.take());
+ } catch (InterruptedException ex) {
+ continue;
+ }
+ workQueue.drainTo(work);
+
+ synchronized (closeLock) {
+ if (!closed) {
+ try {
+ sync.invoke(logFile);
+ } catch (Exception ex) {
+ log.warn("Exception syncing " + ex);
+ for (DfsLogger.LogWork logWork : work) {
+ logWork.exception = ex;
+ }
+ }
+ } else {
+ for (DfsLogger.LogWork logWork : work) {
+ logWork.exception = new LogClosedException();
+ }
+ }
+ }
+
+ boolean sawClosedMarker = false;
+ for (DfsLogger.LogWork logWork : work)
+ if (logWork == CLOSED_MARKER)
+ sawClosedMarker = true;
+ else
+ logWork.latch.countDown();
+
+ if (sawClosedMarker) {
+ synchronized (closeLock) {
+ closeLock.notifyAll();
+ }
+ break;
+ }
+ }
+ }
+ }
+
+ static class LogWork {
+ CountDownLatch latch;
+ volatile Exception exception;
+
+ public LogWork(CountDownLatch latch) {
+ this.latch = latch;
+ }
+ }
+
+ public static class LoggerOperation {
+ private final LogWork work;
+
+ public LoggerOperation(LogWork work) {
+ this.work = work;
+ }
+
+ public void await() throws IOException {
+ try {
+ work.latch.await();
+ } catch (InterruptedException e) {
+ throw new RuntimeException(e);
+ }
+
+ if (work.exception != null) {
+ if (work.exception instanceof IOException)
+ throw (IOException) work.exception;
+ else if (work.exception instanceof RuntimeException)
+ throw (RuntimeException) work.exception;
+ else
+ throw new RuntimeException(work.exception);
+ }
+ }
+ }
+
+ @Override
+ public boolean equals(Object obj) {
+ // filename is unique
+ if (obj == null)
+ return false;
+ if (obj instanceof DfsLogger)
+ return getFileName().equals(((DfsLogger) obj).getFileName());
+ return false;
+ }
+
+ @Override
+ public int hashCode() {
+ // filename is unique
+ return getFileName().hashCode();
+ }
+
+ private final ServerResources conf;
+ private FSDataOutputStream logFile;
+ private DataOutputStream encryptingLogFile = null;
+ private Method sync;
+ private String logPath;
+
+ public DfsLogger(ServerResources conf) throws IOException {
+ this.conf = conf;
+ }
+
+ public DfsLogger(ServerResources conf, String filename) throws IOException {
+ this.conf = conf;
+ this.logPath = filename;
+ }
+
+ public static DFSLoggerInputStreams readHeaderAndReturnStream(VolumeManager fs, Path path, AccumuloConfiguration conf) throws IOException {
+ FSDataInputStream input = fs.open(path);
+ DataInputStream decryptingInput = null;
+
+ byte[] magic = DfsLogger.LOG_FILE_HEADER_V3.getBytes();
+ byte[] magicBuffer = new byte[magic.length];
+ input.readFully(magicBuffer);
+ if (Arrays.equals(magicBuffer, magic)) {
+ // additional parameters it needs from the underlying stream.
+ String cryptoModuleClassname = input.readUTF();
+ CryptoModule cryptoModule = CryptoModuleFactory.getCryptoModule(cryptoModuleClassname);
+
+ // Create the parameters and set the input stream into those parameters
+ CryptoModuleParameters params = CryptoModuleFactory.createParamsObjectFromAccumuloConfiguration(conf);
+ params.setEncryptedInputStream(input);
+
+ // Create the plaintext input stream from the encrypted one
+ params = cryptoModule.getDecryptingInputStream(params);
+
+ if (params.getPlaintextInputStream() instanceof DataInputStream) {
+ decryptingInput = (DataInputStream) params.getPlaintextInputStream();
+ } else {
+ decryptingInput = new DataInputStream(params.getPlaintextInputStream());
+ }
+ } else {
+ input.seek(0);
+ byte[] magicV2 = DfsLogger.LOG_FILE_HEADER_V2.getBytes();
+ byte[] magicBufferV2 = new byte[magicV2.length];
+ input.readFully(magicBufferV2);
+
+ if (Arrays.equals(magicBufferV2, magicV2)) {
+ // Log files from 1.5 dump their options in raw to the logger files. Since we don't know the class
+ // that needs to read those files, we can make a couple of basic assumptions. Either it's going to be
+ // the NullCryptoModule (no crypto) or the DefaultCryptoModule.
+
+ // If it's null, we won't have any parameters whatsoever. First, let's attempt to read
+ // parameters
+ Map<String,String> opts = new HashMap<String,String>();
+ int count = input.readInt();
+ for (int i = 0; i < count; i++) {
+ String key = input.readUTF();
+ String value = input.readUTF();
+ opts.put(key, value);
+ }
+
+ if (opts.size() == 0) {
+ // NullCryptoModule, we're done
+ decryptingInput = input;
+ } else {
+
+ // The DefaultCryptoModule will want to read the parameters from the underlying file, so we will put the file back to that spot.
+ org.apache.accumulo.core.security.crypto.CryptoModule cryptoModule = org.apache.accumulo.core.security.crypto.CryptoModuleFactory
+ .getCryptoModule(DefaultCryptoModule.class.getName());
+
+ CryptoModuleParameters params = CryptoModuleFactory.createParamsObjectFromAccumuloConfiguration(conf);
+
+ input.seek(0);
+ input.readFully(magicBufferV2);
+ params.setEncryptedInputStream(input);
+
+ params = cryptoModule.getDecryptingInputStream(params);
+ if (params.getPlaintextInputStream() instanceof DataInputStream) {
+ decryptingInput = (DataInputStream) params.getPlaintextInputStream();
+ } else {
+ decryptingInput = new DataInputStream(params.getPlaintextInputStream());
+ }
+ }
+
+ } else {
+
+ input.seek(0);
+ decryptingInput = input;
+ }
+
+ }
+ return new DFSLoggerInputStreams(input, decryptingInput);
+ }
+
+ public synchronized void open(String address) throws IOException {
+ String filename = UUID.randomUUID().toString();
+ String logger = StringUtil.join(Arrays.asList(address.split(":")), "+");
+
+ log.debug("DfsLogger.open() begin");
+ VolumeManager fs = conf.getFileSystem();
+
+ logPath = fs.choose(ServerConstants.getWalDirs()) + "/" + logger + "/" + filename;
+ try {
+ short replication = (short) conf.getConfiguration().getCount(Property.TSERV_WAL_REPLICATION);
+ if (replication == 0)
+ replication = fs.getDefaultReplication(new Path(logPath));
+ long blockSize = conf.getConfiguration().getMemoryInBytes(Property.TSERV_WAL_BLOCKSIZE);
+ if (blockSize == 0)
+ blockSize = (long) (conf.getConfiguration().getMemoryInBytes(Property.TSERV_WALOG_MAX_SIZE) * 1.1);
+ if (conf.getConfiguration().getBoolean(Property.TSERV_WAL_SYNC))
+ logFile = fs.createSyncable(new Path(logPath), 0, replication, blockSize);
+ else
+ logFile = fs.create(new Path(logPath), true, 0, replication, blockSize);
+
++ String syncMethod = conf.getConfiguration().get(Property.TSERV_WAL_SYNC_METHOD);
+ try {
+ NoSuchMethodException e = null;
+ try {
- // sync: send data to datanodes
- sync = logFile.getClass().getMethod("sync");
++ // hsync: send data to datanodes and sync the data to disk
++ sync = logFile.getClass().getMethod(syncMethod);
+ } catch (NoSuchMethodException ex) {
++ log.warn("Could not find configured " + syncMethod + " method, trying to fall back to old Hadoop sync method", ex);
+ e = ex;
+ }
+ try {
- // hsync: send data to datanodes and sync the data to disk
- sync = logFile.getClass().getMethod("hsync");
++ // sync: send data to datanodes
++ sync = logFile.getClass().getMethod("sync");
+ e = null;
+ } catch (NoSuchMethodException ex) {}
+ if (e != null)
+ throw new RuntimeException(e);
+ } catch (Exception e) {
+ throw new RuntimeException(e);
+ }
+
+ // Initialize the crypto operations.
+ org.apache.accumulo.core.security.crypto.CryptoModule cryptoModule = org.apache.accumulo.core.security.crypto.CryptoModuleFactory.getCryptoModule(conf
+ .getConfiguration().get(Property.CRYPTO_MODULE_CLASS));
+
+ // Initialize the log file with a header and the crypto params used to set up this log file.
+ logFile.write(LOG_FILE_HEADER_V3.getBytes(Constants.UTF8));
+
+ CryptoModuleParameters params = CryptoModuleFactory.createParamsObjectFromAccumuloConfiguration(conf.getConfiguration());
+
+ NoFlushOutputStream nfos = new NoFlushOutputStream(logFile);
+ params.setPlaintextOutputStream(nfos);
+
+ // In order to bootstrap the reading of this file later, we have to record the CryptoModule that was used to encipher it here,
+ // so that that crypto module can re-read its own parameters.
+
+ logFile.writeUTF(conf.getConfiguration().get(Property.CRYPTO_MODULE_CLASS));
+
+ params = cryptoModule.getEncryptingOutputStream(params);
+ OutputStream encipheringOutputStream = params.getEncryptedOutputStream();
+
+ // If the module just kicks back our original stream, then just use it, don't wrap it in
+ // another data OutputStream.
+ if (encipheringOutputStream == nfos) {
+ log.debug("No enciphering, using raw output stream");
+ encryptingLogFile = nfos;
+ } else {
+ log.debug("Enciphering found, wrapping in DataOutputStream");
+ encryptingLogFile = new DataOutputStream(encipheringOutputStream);
+ }
+
+ LogFileKey key = new LogFileKey();
+ key.event = OPEN;
+ key.tserverSession = filename;
+ key.filename = filename;
+ write(key, EMPTY);
+ sync.invoke(logFile);
+ log.debug("Got new write-ahead log: " + this);
+ } catch (Exception ex) {
+ if (logFile != null)
+ logFile.close();
+ logFile = null;
+ encryptingLogFile = null;
+ throw new IOException(ex);
+ }
+
+ Thread t = new Daemon(new LogSyncingTask());
+ t.setName("Accumulo WALog thread " + toString());
+ t.start();
+ }
+
+ @Override
+ public String toString() {
+ String fileName = getFileName();
+ if (fileName.contains(":"))
+ return getLogger() + "/" + getFileName();
+ return fileName;
+ }
+
+ public String getFileName() {
+ return logPath.toString();
+ }
+
+ public void close() throws IOException {
+
+ synchronized (closeLock) {
+ if (closed)
+ return;
+ // after closed is set to true, nothing else should be added to the queue
+ // CLOSED_MARKER should be the last thing on the queue, therefore when the
+ // background thread sees the marker and exits there should be nothing else
+ // to process... so nothing should be left waiting for the background
+ // thread to do work
+ closed = true;
+ workQueue.add(CLOSED_MARKER);
+ while (!workQueue.isEmpty())
+ try {
+ closeLock.wait();
+ } catch (InterruptedException e) {
+ log.info("Interrupted");
+ }
+ }
+
+ if (encryptingLogFile != null)
+ try {
+ logFile.close();
+ } catch (IOException ex) {
+ log.error(ex);
+ throw new LogClosedException();
+ }
+ }
+
+ public synchronized void defineTablet(int seq, int tid, KeyExtent tablet) throws IOException {
+ // write this log to the METADATA table
+ final LogFileKey key = new LogFileKey();
+ key.event = DEFINE_TABLET;
+ key.seq = seq;
+ key.tid = tid;
+ key.tablet = tablet;
+ try {
+ write(key, EMPTY);
+ sync.invoke(logFile);
+ } catch (IllegalArgumentException e) {
+ log.error("Signature of sync method changed. Accumulo is likely incompatible with this version of Hadoop.");
+ throw new RuntimeException(e);
+ } catch (IllegalAccessException e) {
+ log.error("Could not invoke sync method due to permission error.");
+ throw new RuntimeException(e);
+ } catch (InvocationTargetException e) {
+ Throwable cause = e.getCause();
+ if (cause instanceof IOException) {
+ throw (IOException) cause;
+ } else if (cause instanceof RuntimeException) {
+ throw (RuntimeException) cause;
+ } else if (cause instanceof Error) {
+ throw (Error) cause;
+ } else {
+ // Cause is null, or some other checked exception that was added later.
+ throw new RuntimeException(e);
+ }
+ }
+ }
+
+ private synchronized void write(LogFileKey key, LogFileValue value) throws IOException {
+ key.write(encryptingLogFile);
+ value.write(encryptingLogFile);
+ encryptingLogFile.flush();
+ }
+
+ public LoggerOperation log(int seq, int tid, Mutation mutation) throws IOException {
+ return logManyTablets(Collections.singletonList(new TabletMutations(tid, seq, Collections.singletonList(mutation))));
+ }
+
+ private LoggerOperation logFileData(List<Pair<LogFileKey,LogFileValue>> keys) throws IOException {
+ DfsLogger.LogWork work = new DfsLogger.LogWork(new CountDownLatch(1));
+ synchronized (DfsLogger.this) {
+ try {
+ for (Pair<LogFileKey,LogFileValue> pair : keys) {
+ write(pair.getFirst(), pair.getSecond());
+ }
+ } catch (ClosedChannelException ex) {
+ throw new LogClosedException();
+ } catch (Exception e) {
+ log.error(e, e);
+ work.exception = e;
+ }
+ }
+
+ synchronized (closeLock) {
+ // use a different lock for close check so that adding to work queue does not need
+ // to wait on walog I/O operations
+
+ if (closed)
+ throw new LogClosedException();
+ workQueue.add(work);
+ }
+
+ return new LoggerOperation(work);
+ }
+
+ public LoggerOperation logManyTablets(List<TabletMutations> mutations) throws IOException {
+ List<Pair<LogFileKey,LogFileValue>> data = new ArrayList<Pair<LogFileKey,LogFileValue>>();
+ for (TabletMutations tabletMutations : mutations) {
+ LogFileKey key = new LogFileKey();
+ key.event = MANY_MUTATIONS;
+ key.seq = tabletMutations.getSeq();
+ key.tid = tabletMutations.getTid();
+ LogFileValue value = new LogFileValue();
+ value.mutations = tabletMutations.getMutations();
+ data.add(new Pair<LogFileKey,LogFileValue>(key, value));
+ }
+ return logFileData(data);
+ }
+
+ public LoggerOperation minorCompactionFinished(int seq, int tid, String fqfn) throws IOException {
+ LogFileKey key = new LogFileKey();
+ key.event = COMPACTION_FINISH;
+ key.seq = seq;
+ key.tid = tid;
+ return logFileData(Collections.singletonList(new Pair<LogFileKey,LogFileValue>(key, EMPTY)));
+ }
+
+ public LoggerOperation minorCompactionStarted(int seq, int tid, String fqfn) throws IOException {
+ LogFileKey key = new LogFileKey();
+ key.event = COMPACTION_START;
+ key.seq = seq;
+ key.tid = tid;
+ key.filename = fqfn;
+ return logFileData(Collections.singletonList(new Pair<LogFileKey,LogFileValue>(key, EMPTY)));
+ }
+
+ public String getLogger() {
+ String parts[] = logPath.split("/");
+ return StringUtil.join(Arrays.asList(parts[parts.length - 2].split("[+]")), ":");
+ }
+
+}