public static void checkRegionIsOpened(HBaseTestingUtility HTU, HRegionServer rs, HRegionInfo hri)
throws Exception {
while (!rs.getRegionsInTransitionInRS().isEmpty()) {
Thread.sleep(1);
}
Assert.assertTrue(rs.getRegion(hri.getRegionName()).isAvailable());
}
public boolean isMetaRegion(byte[] regionName) {
HRegion region;
try {
region = hRegionServer.getRegion(regionName);
} catch (NotServingRegionException ignored) {
return false;
}
return region.getRegionInfo().isMetaTable();
}
public static void checkRegionIsClosed(HBaseTestingUtility HTU, HRegionServer rs, HRegionInfo hri)
throws Exception {
while (!rs.getRegionsInTransitionInRS().isEmpty()) {
Thread.sleep(1);
}
try {
Assert.assertFalse(rs.getRegion(hri.getRegionName()).isAvailable());
} catch (NotServingRegionException expected) {
// That's how it work: if the region is closed we have an exception.
}
}
@Override
public Integer apply(Pair<RequestHeader, Message> headerAndParam) {
RequestHeader header = headerAndParam.getFirst();
String methodName = header.getMethodName();
Integer priorityByAnnotation = annotatedQos.get(methodName);
if (priorityByAnnotation != null) {
return priorityByAnnotation;
}
Message param = headerAndParam.getSecond();
if (param == null) {
return HConstants.NORMAL_QOS;
}
if (methodName.equalsIgnoreCase("multi") && param instanceof MultiRequest) {
// The multi call has its priority set in the header. All calls should work this way but
// only this one has been converted so far. No priority == NORMAL_QOS.
return header.hasPriority() ? header.getPriority() : HConstants.NORMAL_QOS;
}
String cls = param.getClass().getName();
Class<? extends Message> rpcArgClass = argumentToClassMap.get(cls);
RegionSpecifier regionSpecifier = null;
// check whether the request has reference to meta region or now.
try {
// Check if the param has a region specifier; the pb methods are hasRegion and getRegion if
// hasRegion returns true. Not all listed methods have region specifier each time. For
// example, the ScanRequest has it on setup but thereafter relies on the scannerid rather than
// send the region over every time.
Method hasRegion = methodMap.get("hasRegion").get(rpcArgClass);
if (hasRegion != null && (Boolean) hasRegion.invoke(param, (Object[]) null)) {
Method getRegion = methodMap.get("getRegion").get(rpcArgClass);
regionSpecifier = (RegionSpecifier) getRegion.invoke(param, (Object[]) null);
HRegion region = hRegionServer.getRegion(regionSpecifier);
if (region.getRegionInfo().isMetaTable()) {
if (LOG.isTraceEnabled()) {
LOG.trace("High priority because region=" + region.getRegionNameAsString());
}
return HConstants.HIGH_QOS;
}
}
} catch (Exception ex) {
// Not good throwing an exception out of here, a runtime anyways. Let the query go into the
// server and have it throw the exception if still an issue. Just mark it normal priority.
if (LOG.isTraceEnabled()) LOG.trace("Marking normal priority after getting exception=" + ex);
return HConstants.NORMAL_QOS;
}
if (methodName.equals("scan")) { // scanner methods...
ScanRequest request = (ScanRequest) param;
if (!request.hasScannerId()) {
return HConstants.NORMAL_QOS;
}
RegionScanner scanner = hRegionServer.getScanner(request.getScannerId());
if (scanner != null && scanner.getRegionInfo().isMetaRegion()) {
if (LOG.isTraceEnabled()) {
// Scanner requests are small in size so TextFormat version should not overwhelm log.
LOG.trace("High priority scanner request " + TextFormat.shortDebugString(request));
}
return HConstants.HIGH_QOS;
}
}
return HConstants.NORMAL_QOS;
}