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本文整理了Java中org.apache.accumulo.server.zookeeper.ZooReaderWriter.getChildren()
方法的一些代码示例,展示了ZooReaderWriter.getChildren()
的具体用法。这些代码示例主要来源于Github
/Stackoverflow
/Maven
等平台,是从一些精选项目中提取出来的代码,具有较强的参考意义,能在一定程度帮忙到你。ZooReaderWriter.getChildren()
方法的具体详情如下:
包路径:org.apache.accumulo.server.zookeeper.ZooReaderWriter
类名称:ZooReaderWriter
方法名:getChildren
暂无
代码示例来源:origin: org.apache.accumulo/accumulo-server
@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);
代码示例来源:origin: org.apache.accumulo/accumulo-server
public List<String> getWorkQueued() throws KeeperException, InterruptedException {
ArrayList<String> children = new ArrayList<String>(zoo.getChildren(path));
children.remove(LOCKS_NODE);
return children;
}
代码示例来源:origin: org.apache.accumulo/accumulo-server-base
public List<String> getWorkQueued() throws KeeperException, InterruptedException {
ArrayList<String> children = new ArrayList<>(zoo.getChildren(path));
children.remove(LOCKS_NODE);
return children;
}
代码示例来源:origin: org.apache.accumulo/accumulo-server-base
@Override
public void run() {
log.debug("Looking for work in " + path);
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);
}
}
}, timerInitialDelay, timerPeriod);
代码示例来源:origin: org.apache.accumulo/accumulo-server-base
List<String> children = zoo.getChildren(path, watcher);
condVar.wait(10000);
children = zoo.getChildren(path, watcher);
代码示例来源:origin: org.apache.accumulo/accumulo-server
List<String> children = zoo.getChildren(path, watcher);
condVar.wait(10000);
children = zoo.getChildren(path, watcher);
代码示例来源:origin: org.apache.accumulo/accumulo-master
@Override
public void process(WatchedEvent event) {
nextEvent.event("Noticed recovery changes", event.getType());
try {
// watcher only fires once, add it back
ZooReaderWriter.getInstance().getChildren(zroot + Constants.ZRECOVERY, this);
} catch (Exception e) {
log.error("Failed to add log recovery watcher back", e);
}
}
});
代码示例来源:origin: org.apache.accumulo/accumulo-server
@Override
public void process(WatchedEvent event) {
nextEvent.event("Noticed recovery changes", event.getType());
try {
// watcher only fires once, add it back
ZooReaderWriter.getInstance().getChildren(zroot + Constants.ZRECOVERY, this);
} catch (Exception e) {
log.error("Failed to add log recovery watcher back", e);
}
}
});
代码示例来源:origin: org.apache.accumulo/accumulo-server-base
public Map<TServerInstance,List<UUID>> getAllMarkers() throws WalMarkerException {
Map<TServerInstance,List<UUID>> result = new HashMap<>();
try {
String path = root();
for (String child : zoo.getChildren(path)) {
TServerInstance inst = new TServerInstance(child);
List<UUID> logs = result.get(inst);
if (logs == null) {
result.put(inst, logs = new ArrayList<>());
}
for (String idString : zoo.getChildren(path + "/" + child)) {
logs.add(UUID.fromString(idString));
}
}
} catch (KeeperException | InterruptedException e) {
throw new WalMarkerException(e);
}
return result;
}
代码示例来源:origin: org.apache.accumulo/accumulo-server-base
@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;
}
}
});
代码示例来源:origin: org.apache.accumulo/accumulo-server
@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;
}
}
});
代码示例来源:origin: org.apache.accumulo/accumulo-server
boolean holdsLock(InetSocketAddress addr) {
try {
String zpath = ZooUtil.getRoot(instance) + Constants.ZTSERVERS + "/" + org.apache.accumulo.core.util.AddressUtil.toString(addr);
List<String> children = ZooReaderWriter.getInstance().getChildren(zpath);
return !(children == null || children.isEmpty());
} catch (KeeperException.NoNodeException ex) {
return false;
} catch (Exception ex) {
log.debug(ex, ex);
return true;
}
}
代码示例来源:origin: org.apache.accumulo/accumulo-server-base
/**
* Fetch all {@link AuthenticationKey}s currently stored in ZooKeeper beneath the configured
* {@code baseNode}.
*
* @return A list of {@link AuthenticationKey}s
*/
public List<AuthenticationKey> getCurrentKeys() throws KeeperException, InterruptedException {
checkState(initialized.get(), "Not initialized");
List<String> children = zk.getChildren(baseNode);
// Shortcircuit to avoid a list creation
if (children.isEmpty()) {
return Collections.<AuthenticationKey> emptyList();
}
// Deserialize each byte[] into an AuthenticationKey
List<AuthenticationKey> keys = new ArrayList<>(children.size());
for (String child : children) {
byte[] data = zk.getData(qualifyPath(child), null);
if (null != data) {
AuthenticationKey key = new AuthenticationKey();
try {
key.readFields(new DataInputStream(new ByteArrayInputStream(data)));
} catch (IOException e) {
throw new AssertionError("Error reading from in-memory buffer which should not happen",
e);
}
keys.add(key);
}
}
return keys;
}
代码示例来源:origin: org.apache.accumulo/accumulo-server
lookForWork(processor, zoo.getChildren(path));
} catch (KeeperException e) {
log.error("Failed to look for work", e);
代码示例来源:origin: org.apache.accumulo/accumulo-server-base
lookForWork(processor, zoo.getChildren(path));
} catch (KeeperException e) {
log.error("Failed to look for work", e);
代码示例来源:origin: org.apache.accumulo/accumulo-test
List<String> locks;
try {
locks = zk.getChildren(path, null);
} catch (NoNodeException e) {
Thread.sleep(5000);
代码示例来源:origin: org.apache.accumulo/accumulo-server-base
public List<Path> getWalsInUse(TServerInstance tsi) throws WalMarkerException {
List<Path> result = new ArrayList<>();
try {
String zpath = root() + "/" + tsi.toString();
zoo.sync(zpath);
for (String child : zoo.getChildren(zpath)) {
Pair<WalState,Path> parts = parse(zoo.getData(zpath + "/" + child, null));
if (parts.getFirst() != WalState.UNREFERENCED) {
result.add(parts.getSecond());
}
}
} catch (KeeperException.NoNodeException e) {
log.debug("{} has no wal entry in zookeeper, assuming no logs", tsi);
} catch (KeeperException | InterruptedException e) {
throw new WalMarkerException(e);
}
return result;
}
代码示例来源:origin: org.apache.accumulo/accumulo-server
private static GCStatus fetchGcStatus() {
GCStatus result = null;
InetSocketAddress address = null;
try {
// Read the gc location from its lock
ZooReaderWriter zk = ZooReaderWriter.getInstance();
String path = ZooUtil.getRoot(instance) + Constants.ZGC_LOCK;
List<String> locks = zk.getChildren(path, null);
if (locks != null && locks.size() > 0) {
Collections.sort(locks);
address = new ServerServices(new String(zk.getData(path + "/" + locks.get(0), null), UTF_8)).getAddress(Service.GC_CLIENT);
GCMonitorService.Client client = ThriftUtil.getClient(new GCMonitorService.Client.Factory(), address, config.getConfiguration());
try {
result = client.getStatus(Tracer.traceInfo(), SecurityConstants.getSystemCredentials());
} finally {
ThriftUtil.returnClient(client);
}
}
} catch (Exception ex) {
log.warn("Unable to contact the garbage collector at " + address, ex);
}
return result;
}
代码示例来源:origin: org.apache.accumulo/accumulo-monitor
private static GCStatus fetchGcStatus() {
GCStatus result = null;
HostAndPort address = null;
try {
// Read the gc location from its lock
ZooReaderWriter zk = ZooReaderWriter.getInstance();
String path = ZooUtil.getRoot(instance) + Constants.ZGC_LOCK;
List<String> locks = zk.getChildren(path, null);
if (locks != null && locks.size() > 0) {
Collections.sort(locks);
address = new ServerServices(new String(zk.getData(path + "/" + locks.get(0), null), UTF_8))
.getAddress(Service.GC_CLIENT);
GCMonitorService.Client client = ThriftUtil.getClient(new GCMonitorService.Client.Factory(),
address, new AccumuloServerContext(config));
try {
result = client.getStatus(Tracer.traceInfo(), getContext().rpcCreds());
} finally {
ThriftUtil.returnClient(client);
}
}
} catch (Exception ex) {
log.warn("Unable to contact the garbage collector at " + address, ex);
}
return result;
}
代码示例来源:origin: org.apache.accumulo/accumulo-server
zoo.mkdirs(path + "/" + LOCKS_NODE);
List<String> children = zoo.getChildren(path, new Watcher() {
@Override
public void process(WatchedEvent event) {
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