Not sure of the question.
A scan will return multiple rows in sequential order. Note that its sequential
byte stream order.
The columns will also be in sequential order as well…
So if you have a set of column named as ‘foo’+timestamp then for each column in
the set of foo, it will be in order with the oldest data first.
If you created a set of columns named as ‘bar’+(epoch - timestamp) then for
each column in the set of bar, it will be in order with the youngest data
first.
Note that all the columns in the set of bar+… will come before the columns in
foo+…
HTH
On Nov 10, 2014, at 7:36 PM, greenblue <gblue1...@gmail.com> wrote:
> When I call the function 'getRow', it returns array.
> But I couldn't find any documents about order of data sequence.
>
> For instance,
> Presume that a column family is 'c' and qualifiers start from 'c:0000000' to
> 'c:1000000'.
> And when I call the function like below
>
> $rowarr = getRow($table, $rowkey);
>
> Does a result guarantee sequential order like below?
> Thank you in advance.
>
> $rowarr[0] has always 'c:' and 'c:0000000' ~ 'c:0000100'
> $rowarr[1] has always 'c:0000101' ~ 'c:0000200'
> ...
> $rowarr[n] has always 'c:0999990' ~ 'c:1000000'
>
> ------------------------------
> HBase.php code
> ------------------------------
>
> public function getRow($tableName, $row, $attributes)
> {
> $this->send_getRow($tableName, $row, $attributes);
> return $this->recv_getRow();
> }
>
> public function send_getRow($tableName, $row, $attributes)
> {
> $args = new \Hbase\Hbase_getRow_args();
> $args->tableName = $tableName;
> $args->row = $row;
> $args->attributes = $attributes;
> $bin_accel = ($this->output_ instanceof TBinaryProtocolAccelerated) &&
> function_exists('thrift_protocol_write_binary');
> if ($bin_accel)
> {
> thrift_protocol_write_binary($this->output_, 'getRow',
> TMessageType::CALL, $args, $this->seqid_, $this->output_->isStrictWrite());
> }
> else
> {
> $this->output_->writeMessageBegin('getRow', TMessageType::CALL,
> $this->seqid_);
> $args->write($this->output_);
> $this->output_->writeMessageEnd();
> $this->output_->getTransport()->flush();
> }
> }
>
> public function recv_getRow()
> {
> $bin_accel = ($this->input_ instanceof TBinaryProtocolAccelerated) &&
> function_exists('thrift_protocol_read_binary');
> if ($bin_accel) $result = thrift_protocol_read_binary($this->input_,
> '\Hbase\Hbase_getRow_result', $this->input_->isStrictRead());
> else
> {
> $rseqid = 0;
> $fname = null;
> $mtype = 0;
>
> $this->input_->readMessageBegin($fname, $mtype, $rseqid);
> if ($mtype == TMessageType::EXCEPTION) {
> $x = new TApplicationException();
> $x->read($this->input_);
> $this->input_->readMessageEnd();
> throw $x;
> }
> $result = new \Hbase\Hbase_getRow_result();
> $result->read($this->input_);
> $this->input_->readMessageEnd();
> }
> if ($result->success !== null) {
> return $result->success;
> }
> if ($result->io !== null) {
> throw $result->io;
> }
> throw new \Exception("getRow failed: unknown result");
> }
>
>
>
> --
> View this message in context:
> http://apache-hbase.679495.n3.nabble.com/I-m-studying-hbase-with-php-and-I-wonder-getRow-guarantee-sequential-order-tp4065833.html
> Sent from the HBase User mailing list archive at Nabble.com.
>
