public void startProcessing(final Processor processor, ThreadPoolExecutor executorService)
throws KeeperException, InterruptedException {
threadPool = (ThreadPoolExecutor) executorService;
zoo.mkdirs(path);
zoo.mkdirs(path + "/" + LOCKS_NODE);
List<String> children =
zoo.getChildren(
path,
new Watcher() {
@Override
public void process(WatchedEvent event) {
switch (event.getType()) {
case NodeChildrenChanged:
if (event.getPath().equals(path))
try {
lookForWork(processor, zoo.getChildren(path, this));
} catch (KeeperException e) {
log.error("Failed to look for work", e);
} catch (InterruptedException e) {
log.info("Interrupted looking for work", e);
}
else
log.info("Unexpected path for NodeChildrenChanged event " + event.getPath());
break;
case NodeCreated:
case NodeDataChanged:
case NodeDeleted:
case None:
log.info("Got unexpected zookeeper event: " + event.getType() + " for " + path);
break;
}
}
});
lookForWork(processor, children);
Random r = new Random();
// Add a little jitter to avoid all the tservers slamming zookeeper at once
SimpleTimer.getInstance()
.schedule(
new Runnable() {
@Override
public void run() {
try {
lookForWork(processor, zoo.getChildren(path));
} catch (KeeperException e) {
log.error("Failed to look for work", e);
} catch (InterruptedException e) {
log.info("Interrupted looking for work", e);
}
}
},
r.nextInt(60 * 1000),
60 * 1000);
}
public void run() throws Exception {
SimpleTimer.getInstance()
.schedule(
new Runnable() {
@Override
public void run() {
flush();
}
},
1000,
1000);
server.serve();
}
private ExecutorService addEs(
final Property maxThreads, String name, final ThreadPoolExecutor tp) {
ExecutorService result = addEs(name, tp);
SimpleTimer.getInstance(tserver.getConfiguration())
.schedule(
new Runnable() {
@Override
public void run() {
try {
int max = tserver.getConfiguration().getCount(maxThreads);
if (tp.getMaximumPoolSize() != max) {
log.info("Changing " + maxThreads.getKey() + " to " + max);
tp.setCorePoolSize(max);
tp.setMaximumPoolSize(max);
}
} catch (Throwable t) {
log.error("Failed to change thread pool size", t);
}
}
},
1000,
10 * 1000);
return result;
}
protected void pageStart(HttpServletRequest req, HttpServletResponse resp, StringBuilder sb)
throws Exception {
resp.setContentType(DEFAULT_CONTENT_TYPE);
int refresh = -1;
Cookie c = getCookie(req, "page.refresh.rate");
if (c != null && c.getValue() != null) {
try {
refresh = Integer.parseInt(c.getValue());
} catch (NumberFormatException e) {
// ignore improperly formatted user cookie
}
}
synchronized (BasicServlet.class) {
// Learn our instance name asynchronously so we don't hang up if zookeeper is down
if (cachedInstanceName == null) {
SimpleTimer.getInstance()
.schedule(
new TimerTask() {
@Override
public void run() {
synchronized (BasicServlet.class) {
if (cachedInstanceName == null) {
cachedInstanceName = HdfsZooInstance.getInstance().getInstanceName();
}
}
}
},
1000);
}
}
// BEGIN PAGE
sb.append("<html>\n");
// BEGIN HEADER
sb.append("<head>\n");
sb.append("<title>")
.append(getTitle(req))
.append(" - Accumulo ")
.append(Constants.VERSION)
.append("</title>\n");
if ((refresh > 0)
&& (req.getRequestURI().startsWith("/docs") == false)
&& (req.getRequestURI().startsWith("/vis") == false))
sb.append("<meta http-equiv='refresh' content='" + refresh + "' />\n");
sb.append("<meta http-equiv='Content-Type' content='")
.append(DEFAULT_CONTENT_TYPE)
.append("' />\n");
sb.append("<meta http-equiv='Content-Script-Type' content='text/javascript' />\n");
sb.append("<meta http-equiv='Content-Style-Type' content='text/css' />\n");
sb.append("<link rel='shortcut icon' type='image/jpg' href='/web/favicon.png' />\n");
sb.append("<link rel='stylesheet' type='text/css' href='/web/screen.css' media='screen' />\n");
sb.append("<script src='/web/functions.js' type='text/javascript'></script>\n");
sb.append(
"<!--[if lte IE 8]><script language=\"javascript\" type=\"text/javascript\" src=\"/web/flot/excanvas.min.js\"></script><![endif]-->\n");
sb.append(
"<script language=\"javascript\" type=\"text/javascript\" src=\"/web/flot/jquery.js\"></script>\n");
sb.append(
"<script language=\"javascript\" type=\"text/javascript\" src=\"/web/flot/jquery.flot.js\"></script>\n");
sb.append("</head>\n");
// BEGIN BODY OPENING
sb.append("\n<body>\n");
sb.append("<div id='content-wrapper'>\n");
sb.append("<div id='content'>\n");
sb.append("<div id='header'>");
if (!bannerText.isEmpty()) {
sb.append("<div id='banner' style='color:")
.append(bannerColor)
.append(";background:")
.append(bannerBackground)
.append("'>")
.append(bannerText)
.append("</div>\n");
}
sb.append("<div id='headertitle'>");
sb.append("<h1>").append(getTitle(req)).append("</h1></div>\n");
sb.append("<div id='subheader'>Instance Name: ")
.append(cachedInstanceName)
.append(" Version: ")
.append(Constants.VERSION)
.append("\n");
sb.append("<br><span class='smalltext'>Instance ID: ")
.append(HdfsZooInstance.getInstance().getInstanceID())
.append("</span>\n");
sb.append("<br><span class='smalltext'>")
.append(new Date().toString().replace(" ", " "))
.append("</span>");
sb.append("</div>\n"); // end <div id='subheader'>
sb.append("</div>\n"); // end <div id='header'>
// BEGIN LEFT SIDE
sb.append("<div id='nav'>\n");
sb.append("<span id='nav-title'><a href='/'>Overview</a></span><br />\n");
sb.append("<hr />\n");
sb.append("<a href='/master'>Master Server</a><br />\n");
sb.append("<a href='/tservers'>Tablet Servers</a><br />\n");
sb.append("<a href='/loggers'>Logger Servers</a><br />\n");
sb.append("<a href='/vis'>Server Activity</a><br />\n");
sb.append("<a href='/gc'>Garbage Collector</a><br />\n");
sb.append("<a href='/tables'>Tables</a><br />\n");
sb.append("<a href='/trace/summary?minutes=10'>Recent Traces</a><br />\n");
sb.append("<a href='/docs'>Documentation</a><br />\n");
int numLogs = LogService.getInstance().getEvents().size();
if (numLogs > 0)
sb.append(
"<span class='error'><a href='/log'>Recent Logs <span class='smalltext'>("
+ numLogs
+ ")</a></span></span><br />\n");
int numProblems = Monitor.getProblemSummary().entrySet().size();
if (numProblems > 0)
sb.append(
"<span class='error'><a href='/problems'>Table Problems <span class='smalltext'>("
+ numProblems
+ ")</a></span></span><br />\n");
sb.append("<hr />\n");
sb.append("<a href='/xml'>XML</a><hr />\n");
sb.append("<div class='smalltext'>[<a href='")
.append("/op?action=refresh&value=")
.append(refresh < 1 ? "5" : "-1");
sb.append("&redir=").append(currentPage(req)).append("'>");
sb.append(refresh < 1 ? "en" : "dis").append("able auto-refresh</a>]</div>\n");
sb.append("</div>\n"); // end <div id='nav'>
sb.append("<div id='main'");
if (bannerText.isEmpty()) sb.append(" style='bottom:0'");
sb.append(">\n");
sb.append("<!-- BEGIN MAIN BODY CONTENT -->\n\n");
}
public static synchronized void startWatching(AccumuloConfiguration config) {
if (!watching) {
SimpleTimer.getInstance(config).schedule(new CompactionWatcher(config), 10000, 10000);
watching = true;
}
}
public static ServerAddress startHsHaServer(
InetSocketAddress address,
TProcessor processor,
final String serverName,
String threadName,
final int numThreads,
long timeBetweenThreadChecks,
long maxMessageSize)
throws TTransportException {
TNonblockingServerSocket transport = new TNonblockingServerSocket(address);
// check for the special "bind to everything address"
if (address.getAddress().getHostAddress().equals("0.0.0.0")) {
// can't get the address from the bind, so we'll do our best to invent our hostname
try {
address =
new InetSocketAddress(InetAddress.getLocalHost().getHostName(), address.getPort());
} catch (UnknownHostException e) {
throw new TTransportException(e);
}
}
THsHaServer.Args options = new THsHaServer.Args(transport);
options.protocolFactory(ThriftUtil.protocolFactory());
options.transportFactory(ThriftUtil.transportFactory(maxMessageSize));
options.stopTimeoutVal(5);
/*
* Create our own very special thread pool.
*/
final ThreadPoolExecutor pool = new SimpleThreadPool(numThreads, "ClientPool");
// periodically adjust the number of threads we need by checking how busy our threads are
SimpleTimer.getInstance()
.schedule(
new Runnable() {
@Override
public void run() {
if (pool.getCorePoolSize() <= pool.getActiveCount()) {
int larger = pool.getCorePoolSize() + Math.min(pool.getQueue().size(), 2);
log.info("Increasing server thread pool size on " + serverName + " to " + larger);
pool.setMaximumPoolSize(larger);
pool.setCorePoolSize(larger);
} else {
if (pool.getCorePoolSize() > pool.getActiveCount() + 3) {
int smaller = Math.max(numThreads, pool.getCorePoolSize() - 1);
if (smaller != pool.getCorePoolSize()) {
// there is a race condition here... the active count could be higher by the
// time
// we decrease the core pool size... so the active count could end up higher
// than
// the core pool size, in which case everything will be queued... the increase
// case
// should handle this and prevent deadlock
log.info(
"Decreasing server thread pool size on " + serverName + " to " + smaller);
pool.setCorePoolSize(smaller);
}
}
}
}
},
timeBetweenThreadChecks,
timeBetweenThreadChecks);
options.executorService(pool);
options.processorFactory(new TProcessorFactory(processor));
return new ServerAddress(new THsHaServer(options), address);
}
public TabletServerResourceManager(TabletServer tserver, VolumeManager fs) {
this.tserver = tserver;
this.conf = tserver.getServerConfigurationFactory();
this.fs = fs;
final AccumuloConfiguration acuConf = conf.getConfiguration();
long maxMemory = acuConf.getMemoryInBytes(Property.TSERV_MAXMEM);
boolean usingNativeMap =
acuConf.getBoolean(Property.TSERV_NATIVEMAP_ENABLED) && NativeMap.isLoaded();
long blockSize = acuConf.getMemoryInBytes(Property.TSERV_DEFAULT_BLOCKSIZE);
long dCacheSize = acuConf.getMemoryInBytes(Property.TSERV_DATACACHE_SIZE);
long iCacheSize = acuConf.getMemoryInBytes(Property.TSERV_INDEXCACHE_SIZE);
long totalQueueSize = acuConf.getMemoryInBytes(Property.TSERV_TOTAL_MUTATION_QUEUE_MAX);
_iCache = new LruBlockCache(iCacheSize, blockSize);
_dCache = new LruBlockCache(dCacheSize, blockSize);
Runtime runtime = Runtime.getRuntime();
if (usingNativeMap) {
// Still check block cache sizes when using native maps.
if (dCacheSize + iCacheSize + totalQueueSize > runtime.maxMemory()) {
throw new IllegalArgumentException(
String.format(
"Block cache sizes %,d and mutation queue size %,d is too large for this JVM configuration %,d",
dCacheSize + iCacheSize, totalQueueSize, runtime.maxMemory()));
}
} else if (maxMemory + dCacheSize + iCacheSize + totalQueueSize > runtime.maxMemory()) {
throw new IllegalArgumentException(
String.format(
"Maximum tablet server map memory %,d block cache sizes %,d and mutation queue size %,d is too large for this JVM configuration %,d",
maxMemory, dCacheSize + iCacheSize, totalQueueSize, runtime.maxMemory()));
}
runtime.gc();
// totalMemory - freeMemory = memory in use
// maxMemory - memory in use = max available memory
if (!usingNativeMap
&& maxMemory > runtime.maxMemory() - (runtime.totalMemory() - runtime.freeMemory())) {
log.warn("In-memory map may not fit into local memory space.");
}
minorCompactionThreadPool = createEs(Property.TSERV_MINC_MAXCONCURRENT, "minor compactor");
// make this thread pool have a priority queue... and execute tablets with the most
// files first!
majorCompactionThreadPool =
createEs(
Property.TSERV_MAJC_MAXCONCURRENT,
"major compactor",
new CompactionQueue().asBlockingQueueOfRunnable());
rootMajorCompactionThreadPool = createEs(0, 1, 300, "md root major compactor");
defaultMajorCompactionThreadPool = createEs(0, 1, 300, "md major compactor");
splitThreadPool = createEs(1, "splitter");
defaultSplitThreadPool = createEs(0, 1, 60, "md splitter");
defaultMigrationPool = createEs(0, 1, 60, "metadata tablet migration");
migrationPool = createEs(Property.TSERV_MIGRATE_MAXCONCURRENT, "tablet migration");
// not sure if concurrent assignments can run safely... even if they could there is probably no
// benefit at startup because
// individual tablet servers are already running assignments concurrently... having each
// individual tablet server run
// concurrent assignments would put more load on the metadata table at startup
assignmentPool = createEs(Property.TSERV_ASSIGNMENT_MAXCONCURRENT, "tablet assignment");
assignMetaDataPool = createEs(0, 1, 60, "metadata tablet assignment");
activeAssignments = new ConcurrentHashMap<KeyExtent, RunnableStartedAt>();
readAheadThreadPool = createEs(Property.TSERV_READ_AHEAD_MAXCONCURRENT, "tablet read ahead");
defaultReadAheadThreadPool =
createEs(Property.TSERV_METADATA_READ_AHEAD_MAXCONCURRENT, "metadata tablets read ahead");
int maxOpenFiles = acuConf.getCount(Property.TSERV_SCAN_MAX_OPENFILES);
fileManager = new FileManager(tserver, fs, maxOpenFiles, _dCache, _iCache);
memoryManager =
Property.createInstanceFromPropertyName(
acuConf, Property.TSERV_MEM_MGMT, MemoryManager.class, new LargestFirstMemoryManager());
memoryManager.init(tserver.getServerConfigurationFactory());
memMgmt = new MemoryManagementFramework();
memMgmt.startThreads();
SimpleTimer timer = SimpleTimer.getInstance(tserver.getConfiguration());
// We can use the same map for both metadata and normal assignments since the keyspace (extent)
// is guaranteed to be unique. Schedule the task once, the task will reschedule itself.
timer.schedule(new AssignmentWatcher(acuConf, activeAssignments, timer), 5000);
}