Hi, Generically speaking, you can't add data writing directly a row with "put ...". You should create a small program that creates the entity and persist it. The fields at HBase are encoded and serialized (depending on the case).
Your exact error is because an issue reading 'vertices:vertexId': the long is expected to be 8 bytes when read with #fromBytes(). When being written with Gora, it is converted to bytes with HBase's method Byte.toBytes() [1]. As you can see, it actually writes 8 bytes. Maybe something like: put 'graphGiraph', '0', 'vertices:vertexId', '\0\0\0\0\0\0\0\0' could work, but I assuume that you will face further problems reading 'vertices:edges'. My recomendation is the one from the beginning: write a small program to write that value through Gora. [1]- https://github.com/apache/hbase/blob/master/hbase-common/src/main/java/org/apache/hadoop/hbase/util/Bytes.java#L758 Regards, Alffonso Nishikawa 2017-10-04 7:31 GMT-01:00 Adhish Singla <adhish.sin...@research.iiit.ac.in>: > This is the Stack Trace to the issue mentioned in the previous reply : > > java.lang.IllegalArgumentException: offset (0) + length (8) exceed the > capacity of the array: 1 > at org.apache.hadoop.hbase.util.Bytes.explainWrongLengthOrOffset( > Bytes.java:543) > at org.apache.hadoop.hbase.util.Bytes.toLong(Bytes.java:521) > at org.apache.hadoop.hbase.util.Bytes.toLong(Bytes.java:494) > at org.apache.gora.hbase.util.HBaseByteInterface.fromBytes( > HBaseByteInterface.java:88) > at org.apache.gora.hbase.store.HBaseStore.setField( > HBaseStore.java:715) > at org.apache.gora.hbase.store.HBaseStore.setField( > HBaseStore.java:681) > at org.apache.gora.hbase.store.HBaseStore.newInstance( > HBaseStore.java:627) > at org.apache.gora.hbase.query.HBaseResult.readNext( > HBaseResult.java:48) > at org.apache.gora.hbase.query.HBaseScannerResult.nextInner( > HBaseScannerResult.java:54) > at org.apache.gora.query.impl.ResultBase.next(ResultBase.java:114) > at org.apache.giraph.io.gora.GoraVertexInputFormat$ > GoraVertexReader.nextVertex(GoraVertexInputFormat.java:227) > at org.apache.giraph.io.internal.WrappedVertexReader.nextVertex( > WrappedVertexReader.java:84) > at org.apache.giraph.worker.VertexInputSplitsCallable. > readInputSplit(VertexInputSplitsCallable.java:169) > at org.apache.giraph.worker.InputSplitsCallable.loadInputSplit( > InputSplitsCallable.java:267) > at org.apache.giraph.worker.InputSplitsCallable.call( > InputSplitsCallable.java:212) > at org.apache.giraph.worker.InputSplitsCallable.call( > InputSplitsCallable.java:60) > at org.apache.giraph.utils.LogStacktraceCallable.call( > LogStacktraceCallable.java:51) > at java.util.concurrent.FutureTask.run(FutureTask.java:262) > at java.util.concurrent.ThreadPoolExecutor.runWorker( > ThreadPoolExecutor.java:1145) > at java.util.concurrent.ThreadPoolExecutor$Worker.run( > ThreadPoolExecutor.java:615) > at java.lang.Thread.run(Thread.java:745) > > ----- Original Message ----- > From: "Adhish Singla" <adhish.sin...@research.iiit.ac.in> > To: user@gora.apache.org > Sent: Wednesday, October 4, 2017 12:57:21 PM > Subject: Re: Need Urgent Help with Giraph-Gora > > I need to have a readable dummy entry in Hbase to start my computation, > and the Gora object reader is not able to read it. > > I try to add a dummy entry to HBase using this shell command : > > "put 'graphGiraph', '0', 'vertices:vertexId', '0'" > > And when I run my code, I get this error in the Logs : > > 2017-10-04 07:16:06,210 ERROR [load-0] gora.GoraVertexInputFormat > (GoraVertexInputFormat.java:nextVertex(231)) - Error transforming > vertices. > 2017-10-04 07:16:06,210 ERROR [load-0] gora.GoraVertexInputFormat > (GoraVertexInputFormat.java:nextVertex(232)) - offset (0) + length (8) > exceed the capacity of the array: 1 > > ----- Original Message ----- > From: "lewismc" <lewi...@apache.org> > To: "Adhish Singla" <adhish.sin...@research.iiit.ac.in>, > user@gora.apache.org > Sent: Wednesday, October 4, 2017 12:48:39 PM > Subject: Re: Need Urgent Help with Giraph-Gora > > What exactly is thebissue you are having here? > From what I can tell all of the code looks good... is a log being > generated? Are you seeing errors? If so can you provide them? > Always remember you need to make sure any changes in your Avro schema are > compiled with the GoraCompiler. > Thanks > > On Tue, Oct 3, 2017 at 10:37 PM Adhish Singla < > adhish.sin...@research.iiit.ac.in> wrote: > > > Hi, > > > > I have attached the screenshots to the Avro schema, > gora-hbase-mapping.xml > > and the gora-object-reader. Kindly point out to my mistake which I > probably > > think is in the gora-hbase-mapping.xml. > > > > Thanks and regards, > > Adhish > > > > ----- Original Message ----- > > From: "lewis john mcgibbney" <lewi...@apache.org> > > To: "<user@gora.apache.org>" <user@gora.apache.org> > > Sent: Wednesday, October 4, 2017 2:56:28 AM > > Subject: Re: Need Urgent Help with Giraph-Gora > > > > Can you send a link to your current gora-hbase-mapping.xml and Avro > schema? > > If not then merely paste them below. > > Lewis > > > > On Tue, Oct 3, 2017 at 8:28 AM, Adhish Singla < > > adhish.sin...@research.iiit.ac.in> wrote: > > > > > Hi, > > > > > > I was able to resolve the issue by adding the resources to the JAR > > itself. > > > Now, I am stuck at writing the gora-hbase-mapping.xml since my avro > > schema > > > uses a nested records i.e. one record stores another record. Kindly > help > > me > > > with the same. > > > > > > I would like to contribute to update giraph to use the latest version > of > > > gora once I am able to cover up with my coming deadline. > > > > > > Thanks for the help. > > > Regards, > > > Adhish > > > > > -- > http://home.apache.org/~lewismc/ > @hectorMcSpector > http://www.linkedin.com/in/lmcgibbney >