public Result get(
final TransactionState transactionState, final Get get, final boolean bool_addLocation)
throws IOException {
if (LOG.isTraceEnabled()) LOG.trace("Enter TransactionalTable.get");
if (bool_addLocation) addLocation(transactionState, super.getRegionLocation(get.getRow()));
final String regionName =
super.getRegionLocation(get.getRow()).getRegionInfo().getRegionNameAsString();
Batch.Call<TrxRegionService, GetTransactionalResponse> callable =
new Batch.Call<TrxRegionService, GetTransactionalResponse>() {
ServerRpcController controller = new ServerRpcController();
BlockingRpcCallback<GetTransactionalResponse> rpcCallback =
new BlockingRpcCallback<GetTransactionalResponse>();
@Override
public GetTransactionalResponse call(TrxRegionService instance) throws IOException {
org.apache.hadoop.hbase.coprocessor.transactional.generated.TrxRegionProtos
.GetTransactionalRequest.Builder
builder = GetTransactionalRequest.newBuilder();
builder.setGet(ProtobufUtil.toGet(get));
builder.setTransactionId(transactionState.getTransactionId());
builder.setRegionName(ByteString.copyFromUtf8(regionName));
instance.get(controller, builder.build(), rpcCallback);
return rpcCallback.get();
}
};
GetTransactionalResponse result = null;
try {
int retryCount = 0;
boolean retry = false;
do {
Iterator<Map.Entry<byte[], TrxRegionProtos.GetTransactionalResponse>> it =
super.coprocessorService(TrxRegionService.class, get.getRow(), get.getRow(), callable)
.entrySet()
.iterator();
if (it.hasNext()) {
result = it.next().getValue();
retry = false;
}
if (result == null || result.getException().contains("closing region")) {
Thread.sleep(TransactionalTable.delay);
retry = true;
transactionState.setRetried(true);
retryCount++;
}
} while (retryCount < TransactionalTable.retries && retry == true);
} catch (Throwable e) {
if (LOG.isErrorEnabled()) LOG.error("ERROR while calling getTransactional ", e);
throw new IOException("ERROR while calling getTransactional ", e);
}
if (result == null) throw new IOException(retryErrMsg);
else if (result.hasException()) throw new IOException(result.getException());
return ProtobufUtil.toResult(result.getResult());
}
@SuppressWarnings("deprecation")
@Override
public DResult get(Get get, long startId) throws IOException {
if (get.hasFamilies()) get.addFamily(DominoConst.INNER_FAMILY);
get.setTimeRange(0, startId + 1); // [x, y)
get.setMaxVersions();
Result preRead = region.get(get);
List<KeyValue> status = preRead.getColumn(DominoConst.INNER_FAMILY, DominoConst.STATUS_COL);
if (status == null || status.size() == 0) {
Result ret = MVCC.handleResult(this, getTrxMetaTable(), preRead, startId, null);
return new DResult(ret, null);
}
Integer lockId = region.getLock(null, get.getRow(), true);
try {
Result r =
MVCC.handleResult(this, getTrxMetaTable(), region.get(get, lockId), startId, lockId);
return new DResult(r, null);
} catch (TransactionOutOfDateException oode) {
return new DResult(null, oode.getMessage());
} catch (InvalidRowStatusException e) {
return new DResult(null, e.getMessage());
} finally {
region.releaseRowLock(lockId);
}
}
/**
* Transactional version of {@link HTable#get(Get)}
*
* @param transactionState Identifier of the transaction
* @see HTable#get(Get)
* @throws IOException
*/
public Result get(TransactionState transactionState, final Get get) throws IOException {
final long readTimestamp = transactionState.getStartTimestamp();
final Get tsget = new Get(get.getRow());
TimeRange timeRange = get.getTimeRange();
long startTime = timeRange.getMin();
long endTime = Math.min(timeRange.getMax(), readTimestamp + 1);
// int maxVersions = get.getMaxVersions();
tsget
.setTimeRange(startTime, endTime)
.setMaxVersions((int) (versionsAvg + CACHE_VERSIONS_OVERHEAD));
Map<byte[], NavigableSet<byte[]>> kvs = get.getFamilyMap();
for (Map.Entry<byte[], NavigableSet<byte[]>> entry : kvs.entrySet()) {
byte[] family = entry.getKey();
NavigableSet<byte[]> qualifiers = entry.getValue();
if (qualifiers == null || qualifiers.isEmpty()) {
tsget.addFamily(family);
} else {
for (byte[] qualifier : qualifiers) {
tsget.addColumn(family, qualifier);
}
}
}
// Result result;
// Result filteredResult;
// do {
// result = super.get(tsget);
// filteredResult = filter(super.get(tsget), readTimestamp, maxVersions);
// } while (!result.isEmpty() && filteredResult == null);
getsPerformed++;
Result result =
filter(
transactionState,
super.get(tsget),
readTimestamp,
(int) (versionsAvg + CACHE_VERSIONS_OVERHEAD));
return result == null ? new Result() : result;
// Scan scan = new Scan(get);
// scan.setRetainDeletesInOutput(true);
// ResultScanner rs = this.getScanner(transactionState, scan);
// Result r = rs.next();
// if (r == null) {
// r = new Result();
// }
// return r;
}
