The unknown scanner exception is just a warning due to the fact that the table scan is not eager but lazy..so between two consecutive getNextRecord() call the Habase server timeouts the scanner resource's..In the house extension I just recreate the scanner from the last read key. This is a workaround to avoid too much tuning with caching and timeouts hbase params... On 28 May 2015 10:24, "Hilmi Yildirim" <hilmi.yildi...@neofonie.de> wrote:
> Hi, > I also tried to read from HBase using the > flink-0.9.0-milestone-1-bin-hadoop2 version. It works great and it uses the > config declared in the hbase-site.xml. > > I configured a flink cluster with 2 machines. For that I deployed the > flink folder with the corresponding configurations on each machine. To > start the cluster I use the start script ./start-cluster.sh. Then, I run > the job and it works. Now, I configured a flink cluster with 13 machines. > All machines read from hbase correctly besides 1 or 2 machines. These 1 or > 2 machines get following exception > "org.apache.hadoop.hbase.UnknownScannerException: > org.apache.hadoop.hbase.UnknownScannerException: Name 2423, already closed?" > > When I restart the job then the exception occurs for other 1 or 2 machines. > > Does anyone know why this exception occurs? > > Best Regards, > > -- > -- > Hilmi Yildirim > Software Developer R&D > > T: +49 30 24627-281hilmi.yildi...@neofonie.de > http://www.neofonie.de > > Besuchen Sie den Neo Tech Blog für Anwender:http://blog.neofonie.de/ > > Folgen Sie > uns:https://plus.google.com/+neofoniehttp://www.linkedin.com/company/neofonie-gmbhhttps://www.xing.com/companies/neofoniegmbh > > Neofonie GmbH | Robert-Koch-Platz 4 | 10115 Berlin > Handelsregister Berlin-Charlottenburg: HRB 67460 > Geschäftsführung: Thomas Kitlitschko > >
