/**
* Get a path from the local FS. If size is known, we go round-robin over the set of disks (via
* the configured dirs) and return the first complete path which has enough space.
*
* <p>If size is not known, use roulette selection -- pick directories with probability
* proportional to their available space.
*/
public synchronized Path getLocalPathForWrite(
String pathStr, long size, Configuration conf, boolean checkWrite) throws IOException {
confChanged(conf);
int numDirs = localDirsPath.length;
int numDirsSearched = 0;
// remove the leading slash from the path (to make sure that the uri
// resolution results in a valid path on the dir being checked)
if (pathStr.startsWith("/")) {
pathStr = pathStr.substring(1);
}
Path returnPath = null;
Path path = new Path(pathStr);
if (size == SIZE_UNKNOWN) { // do roulette selection: pick dir with probability
// proportional to available size
long[] availableOnDisk = new long[dirDF.length];
long totalAvailable = 0;
// build the "roulette wheel"
for (int i = 0; i < dirDF.length; ++i) {
availableOnDisk[i] = dirDF[i].getAvailable();
totalAvailable += availableOnDisk[i];
}
// Keep rolling the wheel till we get a valid path
Random r = new java.util.Random();
while (numDirsSearched < numDirs && returnPath == null) {
long randomPosition = Math.abs(r.nextLong()) % totalAvailable;
int dir = 0;
while (randomPosition > availableOnDisk[dir]) {
randomPosition -= availableOnDisk[dir];
dir++;
}
dirNumLastAccessed = dir;
returnPath = createPath(path, checkWrite);
if (returnPath == null) {
totalAvailable -= availableOnDisk[dir];
availableOnDisk[dir] = 0; // skip this disk
numDirsSearched++;
}
}
} else {
while (numDirsSearched < numDirs && returnPath == null) {
long capacity = dirDF[dirNumLastAccessed].getAvailable();
if (capacity > size) {
returnPath = createPath(path, checkWrite);
}
dirNumLastAccessed++;
dirNumLastAccessed = dirNumLastAccessed % numDirs;
numDirsSearched++;
}
}
if (returnPath != null) {
return returnPath;
}
// no path found
throw new DiskErrorException("Could not find any valid local " + "directory for " + pathStr);
}
public void testIdentityCalculator() throws Exception {
execute("CRUD.new");
assertNoErrors();
setValue("number", "-1"); // needed in this case because 0 is an existing key
setValue("name", "JUNIT COLOR " + (int) (Math.random() * 200));
execute("TypicalNotResetOnSave.save");
assertNoErrors();
String last = getValue("number");
execute("CRUD.new");
assertNoErrors();
setValue("number", "-1"); // needed in this case because 0 is an existing key
setValue("name", "JUNIT COLOR " + (int) (Math.random() * 200));
execute("TypicalNotResetOnSave.save");
assertNoErrors();
String next = String.valueOf(Integer.parseInt(last) + 1);
assertValue("number", next);
}
void numRecStats(byte[] record, int start, int len) throws IOException {
numRec_++;
if (numRec_ == nextStatusRec_) {
String recordStr = new String(record, start, Math.min(len, statusMaxRecordChars_), "UTF-8");
nextStatusRec_ += 100; // *= 10;
String status = getStatus(recordStr);
LOG.info(status);
reporter_.setStatus(status);
}
}
private int[] getWidths(TableModel tableModel) {
int[] widths = new int[tableModel.getColumnCount()];
for (int r = 0;
r < Math.min(tableModel.getRowCount(), 500);
r++) { // 500 is not for performance, but for using only a sample of data with huge table
for (int c = 0; c < tableModel.getColumnCount(); c++) {
Object o = tableModel.getValueAt(r, c);
if (o instanceof String) {
String s = ((String) o).trim();
if (s.length() > widths[c]) widths[c] = s.length();
}
}
}
return widths;
}
public void setUp() throws Exception {
String time = String.valueOf((new Date()).getTime()).substring(8);
String random = String.valueOf(Math.random()).substring(2);
unique = (time + random);
serviceName = "javaTastyTest-" + unique;
JTastyDAO dao = new JTastyMockDAO();
TastyBean tb = new TastyBean();
tb.setDao(dao);
tc = new TastyClient(tastyServerUrl, serviceName);
tc.setTastyBean(tb);
logger.debug(tastyServerUrl + "/service/" + serviceName);
// create the service:
tc.post(tastyServerUrl + "/service/" + serviceName);
// add the user:
tc.beanstatus();
}
public GaussianDistribution(double[] values) {
// Logger.getAnonymousLogger().info(String.valueOf(values.length));
// 1. mean
double sum = 0;
for (double v : values) sum += v;
this.mean = sum / values.length;
// System.out.println(this.mean);
// 2. variance
double[] deltas = values.clone();
for (int i = 0; i < values.length; i++) {
double diff = values[i] - this.mean;
deltas[i] = diff * diff;
}
sum = 0;
for (double v : deltas) sum += v;
this.variance = sum / (values.length - 1);
// 3. standard deviation
this.standardDeviation = Math.sqrt(this.variance);
}
public double probability(Double value) {
double expArg = -.5 * (value - mean) * (value - mean) / variance;
return Math.pow(2. * Math.PI * variance, -.5) * Math.exp(expArg);
}
public GaussianDistribution(double mean, double deviance) {
this.mean = mean;
this.variance = deviance;
this.standardDeviation = Math.sqrt(deviance);
}