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Posted to user@hbase.apache.org by yeshwanth kumar <ye...@gmail.com> on 2014/04/22 14:18:42 UTC
Unable to get data of znode /hbase/table/mytable.
Hi,
i am running webapp written on jaxrs framework which performs CRUD
opereations on hbase.
app was working fine till last week,
now when i perform reading opeartion from hbase i don't see any data, i
don't see any errors or exceptions but i found this lines in the log
*""Unable to get data of znode /hbase/table/myTable because node does not
exist (not an error)"".*
i followed this<https://blog.cloudera.com/blog/2013/10/what-are-hbase-znodes/>
cloudera
article about znodes and this is what i found,
*$[zk: localhost:2181(CONNECTED) 14] ls /hbase*
*[splitlog, online-snapshot, unassigned, table94, root-region-server, rs,
backup-masters, table, draining, master, shutdown, hbaseid]*
all the tables were present in /hbase/table94, where as /hbase/table is
empty.
i know what is the problem now,
but i don't know how to solve it.
can someone help me with this issue.
Thanks,
Yeshwanth
Re: Unable to get data of znode /hbase/table/mytable.
Posted by yeshwanth kumar <ye...@gmail.com>.
thanks ted
On Sun, Apr 27, 2014 at 11:06 PM, Ted Yu <yu...@gmail.com> wrote:
> I am adding cdh users mailing list where you would get good response to the
> issue below.
>
> Cheers
>
>
> On Sun, Apr 27, 2014 at 10:30 AM, yeshwanth kumar <yeshwanth43@gmail.com
> >wrote:
>
> > hi ted,
> >
> > i replaced the hbase 0.94.7 with cdh 0.94.6 version.
> > i don't see any errors in regionservers log but i am getting this
> > exception in my tomcat webapp.
> >
> > javax.servlet.ServletException: java.lang.NoClassDefFoundError:
> > org/apache/hadoop/net/SocketInputWrapper
> >
> >
> com.sun.jersey.spi.container.servlet.WebComponent.service(WebComponent.java:420)
> >
> >
> com.sun.jersey.spi.container.servlet.ServletContainer.service(ServletContainer.java:538)
> >
> >
> com.sun.jersey.spi.container.servlet.ServletContainer.service(ServletContainer.java:716)
> > javax.servlet.http.HttpServlet.service(HttpServlet.java:728)
> >
> > org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
> >
> > *root cause*
> >
> > java.lang.NoClassDefFoundError: org/apache/hadoop/net/SocketInputWrapper
> >
> >
> org.apache.hadoop.hbase.ipc.HBaseClient.createConnection(HBaseClient.java:255)
> >
> >
> org.apache.hadoop.hbase.ipc.HBaseClient.getConnection(HBaseClient.java:1120)
> >
> org.apache.hadoop.hbase.ipc.HBaseClient.call(HBaseClient.java:980)
> >
> >
> org.apache.hadoop.hbase.ipc.WritableRpcEngine$Invoker.invoke(WritableRpcEngine.java:86)
> > com.sun.proxy.$Proxy66.getProtocolVersion(Unknown Source)
> >
> >
> org.apache.hadoop.hbase.ipc.WritableRpcEngine.getProxy(WritableRpcEngine.java:138)
> >
> > org.apache.hadoop.hbase.ipc.HBaseRPC.waitForProxy(HBaseRPC.java:208)
> >
> >
> org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.getHRegionConnection(HConnectionManager.java:1358)
> >
> >
> org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.getHRegionConnection(HConnectionManager.java:1317)
> >
> >
> org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.getHRegionConnection(HConnectionManager.java:1304)
> >
> >
> org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.locateRegionInMeta(HConnectionManager.java:990)
> >
> >
> org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.locateRegion(HConnectionManager.java:885)
> >
> >
> org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.locateRegionInMeta(HConnectionManager.java:987)
> >
> >
> org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.locateRegion(HConnectionManager.java:889)
> >
> >
> org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.locateRegion(HConnectionManager.java:846)
> >
> org.apache.hadoop.hbase.client.HTable.finishSetup(HTable.java:270)
> > org.apache.hadoop.hbase.client.HTable.<init>(HTable.java:210)
> > org.apache.hadoop.hbase.client.HTable.<init>(HTable.java:169)
> >
> >
> com.serendio.penton.rest.server.CsvMgmtEndPoint.<init>(CsvMgmtEndPoint.java:76)
> > sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native
> > Method)
> >
> >
> sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57)
> >
> >
> sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
> > java.lang.reflect.Constructor.newInstance(Constructor.java:526)
> >
> >
> com.sun.jersey.server.spi.component.ResourceComponentConstructor._construct(ResourceComponentConstructor.java:191)
> >
> >
> com.sun.jersey.server.spi.component.ResourceComponentConstructor.construct(ResourceComponentConstructor.java:179)
> >
> >
> com.sun.jersey.server.impl.resource.PerRequestFactory$PerRequest._getInstance(PerRequestFactory.java:182)
> >
> >
> com.sun.jersey.server.impl.resource.PerRequestFactory$AbstractPerRequest.getInstance(PerRequestFactory.java:144)
> >
> >
> com.sun.jersey.server.impl.application.WebApplicationContext.getResource(WebApplicationContext.java:238)
> >
> >
> com.sun.jersey.server.impl.uri.rules.ResourceClassRule.accept(ResourceClassRule.java:83)
> >
> >
> com.sun.jersey.server.impl.uri.rules.RightHandPathRule.accept(RightHandPathRule.java:147)
> >
> >
> com.sun.jersey.server.impl.uri.rules.RootResourceClassesRule.accept(RootResourceClassesRule.java:84)
> >
> >
> com.sun.jersey.server.impl.application.WebApplicationImpl._handleRequest(WebApplicationImpl.java:1511)
> >
> >
> com.sun.jersey.server.impl.application.WebApplicationImpl._handleRequest(WebApplicationImpl.java:1442)
> >
> >
> com.sun.jersey.server.impl.application.WebApplicationImpl.handleRequest(WebApplicationImpl.java:1391)
> >
> >
> com.sun.jersey.server.impl.application.WebApplicationImpl.handleRequest(WebApplicationImpl.java:1381)
> >
> >
> com.sun.jersey.spi.container.servlet.WebComponent.service(WebComponent.java:416)
> >
> >
> com.sun.jersey.spi.container.servlet.ServletContainer.service(ServletContainer.java:538)
> >
> >
> com.sun.jersey.spi.container.servlet.ServletContainer.service(ServletContainer.java:716)
> > javax.servlet.http.HttpServlet.service(HttpServlet.java:728)
> >
> > org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
> >
> >
> > here's the pom i specified
> >
> > <dependency>
> > <groupId>org.apache.hbase</groupId>
> > <artifactId>hbase</artifactId>
> > <version>0.94.6-cdh4.5.0</version>
> > <exclusions>
> > <exclusion>
> > <groupId> org.mortbay.jetty</groupId>
> > <artifactId>jetty</artifactId>
> > </exclusion>
> > <exclusion>
> > <groupId> org.mortbay.jetty</groupId>
> > <artifactId>jetty-util</artifactId>
> > </exclusion>
> > <exclusion>
> > <groupId> org.mortbay.jetty</groupId>
> > <artifactId>jsp-api-2.1</artifactId>
> > </exclusion>
> > <exclusion>
> > <groupId> org.mortbay.jetty</groupId>
> > <artifactId>jsp-2.1</artifactId>
> > </exclusion>
> > <exclusion>
> > <groupId> org.mortbay.jetty</groupId>
> > <artifactId>servlet-api-2.5</artifactId>
> > </exclusion>
> > <exclusion>
> > <groupId>tomcat</groupId>
> > <artifactId>jasper-runtime</artifactId>
> > </exclusion>
> > <exclusion>
> > <groupId>tomcat</groupId>
> > <artifactId>jasper-compiler</artifactId>
> > </exclusion>
> > </exclusions>
> > </dependency>
> >
> > can you help me out with this issue.
> >
> > thanks,
> > yeshwanth.
> >
> >
> >
> >
> >
> > On Sun, Apr 27, 2014 at 10:32 PM, yeshwanth kumar <yeshwanth43@gmail.com
> > >wrote:
> >
> > > here's the code snippet <http://pastebin.com/AGh7mTNT>
> > >
> > > thanks,
> > > yeshwanth
> > >
> > >
> > > On Sun, Apr 27, 2014 at 10:20 PM, Ted Yu <yu...@gmail.com> wrote:
> > >
> > >> Can you show us code snippet where you add filter to Scan object ?
> > >>
> > >> Thanks
> > >>
> > >> On Apr 27, 2014, at 9:43 AM, yeshwanth kumar <ye...@gmail.com>
> > >> wrote:
> > >>
> > >> > hi ted,
> > >> >
> > >> > i am using fuzzyrow filter while scanning a table.
> > >> > my cluster is running on HBase 0.94.6-cdh4.5.0
> > >> > but in my webapp i specified hbase 0.94.7. dependency.
> > >> >
> > >> > even after changing the dependency i still see the same error.
> > >> >
> > >> > thanks,
> > >> > yeshwanth.
> > >> >
> > >> >
> > >> >
> > >> >
> > >> > On Sun, Apr 27, 2014 at 10:03 PM, Ted Yu <yu...@gmail.com>
> wrote:
> > >> >
> > >> >> Did the exception below happen when you were performing some query
> on
> > >> the
> > >> >> region server ?
> > >> >>
> > >> >> Can you tell us a bit more whether your query uses FilterList ?
> > >> >>
> > >> >> Thanks
> > >> >>
> > >> >>
> > >> >> On Sun, Apr 27, 2014 at 9:28 AM, yeshwanth kumar <
> > >> yeshwanth43@gmail.com
> > >> >>> wrote:
> > >> >>
> > >> >>> hi jean,
> > >> >>>
> > >> >>> i am using HBase 0.94.6-cdh4.5.0
> > >> >>>
> > >> >>> i found this in regionservers log,
> > >> >>>
> > >> >>> org.apache.hadoop.hbase.io.HbaseObjectWritable
> > >> >>> Error in readFields
> > >> >>> java.lang.ClassCastException:
> > >> >>> org.apache.hadoop.hbase.snapshot.HSnapshotDescription cannot be
> cast
> > >> to
> > >> >>> org.apache.hadoop.hbase.filter.Filter
> > >> >>> at
> > >> >>>
> > >>
> > org.apache.hadoop.hbase.filter.FilterList.readFields(FilterList.java:276)
> > >> >>> at org.apache.hadoop.hbase.client.Scan.readFields(Scan.java:591)
> > >> >>> at
> > >> >>
> > >>
> >
> org.apache.hadoop.hbase.io.HbaseObjectWritable.readObject(HbaseObjectWritable.java:689)
> > >> >>> at
> > >> org.apache.hadoop.hbase.ipc.Invocation.readFields(Invocation.java:127)
> > >> >>> at
> > >> >>
> > >>
> >
> org.apache.hadoop.hbase.ipc.HBaseServer$Connection.processData(HBaseServer.java:1313)
> > >> >>> at
> > >> >>
> > >>
> >
> org.apache.hadoop.hbase.ipc.HBaseServer$Connection.readAndProcess(HBaseServer.java:1228)
> > >> >>> at
> > >> >>
> > >>
> >
> org.apache.hadoop.hbase.ipc.HBaseServer$Listener.doRead(HBaseServer.java:750)
> > >> >>> at
> > >> >>
> > >>
> >
> org.apache.hadoop.hbase.ipc.HBaseServer$Listener$Reader.doRunLoop(HBaseServer.java:541)
> > >> >>> at
> > >> >>
> > >>
> >
> org.apache.hadoop.hbase.ipc.HBaseServer$Listener$Reader.run(HBaseServer.java:516)
> > >> >>> at
> > >> >>
> > >>
> >
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
> > >> >>> at
> > >> >>
> > >>
> >
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
> > >> >>> at java.lang.Thread.run(Thread.java:744)
> > >> >>>
> > >> >>> how can i fix this dependency issue.
> > >> >>>
> > >> >>>
> > >> >>>
> > >> >>>
> > >> >>> On Fri, Apr 25, 2014 at 9:06 PM, yeshwanth kumar <
> > >> yeshwanth43@gmail.com
> > >> >>>> wrote:
> > >> >>>
> > >> >>>> hi jean,
> > >> >>>>
> > >> >>>> i haven't written any piece of code to workaround znode,
> > >> >>>> one of my rest endpoint in webapp reads data from hbase.
> > >> >>>> it is giving me empty set.
> > >> >>>> all if found in the logs is
> > >> >>>>
> > >> >>>> Reading reply sessionid:0x145974472760023, packet::
> clientPath:null
> > >> >>>> serverPath:null finished:false header:: 42,4 replyHeader::
> > >> >>>> 42,77309411972,-101 request:: '/hbase/table/NCSVs,F response::
> > >> >>>> hconnection-0x145974472760023 Unable to get data of znode
> > >> >>>> /hbase/table/NCSVs because node does not exist (not an error)
> > >> >>>>
> > >> >>>> this is what i found in zookeeper client
> > >> >>>>
> > >> >>>> *$[zk: localhost:2181(CONNECTED) 14] ls /hbase*
> > >> >>>> *[splitlog, online-snapshot, unassigned, table94,
> > root-region-server,
> > >> >> rs,
> > >> >>>> backup-masters, table, draining, master, shutdown, hbaseid]*
> > >> >>>>
> > >> >>>>
> > >> >>>> -yeshwanth
> > >> >>>>
> > >> >>>>
> > >> >>>> On Fri, Apr 25, 2014 at 8:18 PM, Jean-Marc Spaggiari <
> > >> >>>> jean-marc@spaggiari.org> wrote:
> > >> >>>>
> > >> >>>>> Hi Yeshwanth,
> > >> >>>>>
> > >> >>>>> What is your webapp looking at the ZNode? If you should the Java
> > >> >> client
> > >> >>>>> and
> > >> >>>>> not look at the ZNode. Not getting why it's looking there. Do yo
> > >> >> uknow?
> > >> >>>>>
> > >> >>>>> JM
> > >> >>>>>
> > >> >>>>>
> > >> >>>>> 2014-04-25 2:01 GMT-04:00 yeshwanth kumar <
> yeshwanth43@gmail.com
> > >:
> > >> >>>>>
> > >> >>>>>> hi matteo,
> > >> >>>>>>
> > >> >>>>>> my problem isn't solved yet.
> > >> >>>>>> webapp isn't reading data from hbase.
> > >> >>>>>> all i see in logs is znode /hbase/table/mytable doesn't exist.
> > >> >>>>>> but all my tables are present in /hbase/table94/
> > >> >>>>>>
> > >> >>>>>> so how can i fix this problem.
> > >> >>>>>>
> > >> >>>>>> thanks,
> > >> >>>>>> yeshwanth
> > >> >>>>>>
> > >> >>>>>>
> > >> >>>>>>
> > >> >>>>>>
> > >> >>>>>> On Tue, Apr 22, 2014 at 9:58 PM, Matteo Bertozzi <
> > >> >>>>> theo.bertozzi@gmail.com
> > >> >>>>>>> wrote:
> > >> >>>>>>
> > >> >>>>>>> that is already done by the server.
> > >> >>>>>>> The ZooKeeperWatcher.java is using conf.get(
> > >> >>>>>>> "zookeeper.znode.masterTableEnableDisable", "table94"));
> > >> >>>>>>>
> > >> >>>>>>> anyway, why are you looking at the znodes?
> > >> >>>>>>> a client application should never look at the znodes.
> > >> >>>>>>> The znodes are only carrying transient informations used for
> > >> >>>>> coordination
> > >> >>>>>>>
> > >> >>>>>>> Matteo
> > >> >>>>>>>
> > >> >>>>>>>
> > >> >>>>>>>
> > >> >>>>>>> On Tue, Apr 22, 2014 at 9:20 AM, yeshwanth kumar <
> > >> >>>>> yeshwanth43@gmail.com
> > >> >>>>>>>> wrote:
> > >> >>>>>>>
> > >> >>>>>>>> hi matteo,
> > >> >>>>>>>>
> > >> >>>>>>>> how do i specify hbase znode to use /hbase/table94 instead
> of
> > >> >>>>>>> /hbase/table
> > >> >>>>>>>>
> > >> >>>>>>>> thanks
> > >> >>>>>>>>
> > >> >>>>>>>>
> > >> >>>>>>>> On Tue, Apr 22, 2014 at 9:40 PM, Matteo Bertozzi <
> > >> >>>>>>> theo.bertozzi@gmail.com
> > >> >>>>>>>>> wrote:
> > >> >>>>>>>>
> > >> >>>>>>>>> On Tue, Apr 22, 2014 at 9:00 AM, yeshwanth kumar <
> > >> >>>>>>> yeshwanth43@gmail.com
> > >> >>>>>>>>>> wrote:
> > >> >>>>>>>>>
> > >> >>>>>>>>>> @matteo
> > >> >>>>>>>>>> present znode is at /hbase/table where it is empty.
> > >> >>>>>>>>>> where as all my tables are present in /hbase/table94
> > >> >>>>>>>>>> now webapp isn't reading the data from hbase.
> > >> >>>>>>>>>
> > >> >>>>>>>>> cdh 4.5.0 doesn't write in /hbase/table due to a
> compatibility
> > >> >>>>> issue
> > >> >>>>>>>>> /hbase/table94
> > >> >>>>>>>>> is used.
> > >> >>>>>>>>> (see HBASE-6710 for details)
> > >> >>>>>>>>>
> > >> >>>>>>>>> On Tue, Apr 22, 2014 at 6:56 PM, Matteo Bertozzi <
> > >> >>>>>>>> theo.bertozzi@gmail.com
> > >> >>>>>>>>>> wrote:
> > >> >>>>>>>>>
> > >> >>>>>>>>>>
> > >> >>>>>>>>>>> /hbase/table94 is a "compatibility" znode that replaces
> > >> >>>>>>> /hbase/table
> > >> >>>>>>>>>>> if you want more details take a look at HBASE-6710.
> > >> >>>>>>>>>>>
> > >> >>>>>>>>>>> what is the problem of looking into /hbase/table94 instead
> > >> >>> of
> > >> >>>>>>>>>> /hbase/table?
> > >> >>>>>>>>>>>
> > >> >>>>>>>>>>> Matteo
> > >> >>>>>>>>>>>
> > >> >>>>>>>>>>>
> > >> >>>>>>>>>>>
> > >> >>>>>>>>>>> On Tue, Apr 22, 2014 at 5:18 AM, yeshwanth kumar <
> > >> >>>>>>>>> yeshwanth43@gmail.com
> > >> >>>>>>>>>>>> wrote:
> > >> >>>>>>>>>>>
> > >> >>>>>>>>>>>> Hi,
> > >> >>>>>>>>>>>>
> > >> >>>>>>>>>>>>
> > >> >>>>>>>>>>>> i am running webapp written on jaxrs framework which
> > >> >>>>> performs
> > >> >>>>>>> CRUD
> > >> >>>>>>>>>>>> opereations on hbase.
> > >> >>>>>>>>>>>>
> > >> >>>>>>>>>>>> app was working fine till last week,
> > >> >>>>>>>>>>>> now when i perform reading opeartion from hbase i don't
> > >> >>> see
> > >> >>>>>> any
> > >> >>>>>>>>> data,
> > >> >>>>>>>>>> i
> > >> >>>>>>>>>>>> don't see any errors or exceptions but i found this
> > >> >> lines
> > >> >>> in
> > >> >>>>>> the
> > >> >>>>>>>> log
> > >> >>>>>>>>>>>>
> > >> >>>>>>>>>>>> *""Unable to get data of znode /hbase/table/myTable
> > >> >>> because
> > >> >>>>>> node
> > >> >>>>>>>> does
> > >> >>>>>>>>>> not
> > >> >>>>>>>>>>>> exist (not an error)"".*
> > >> >>>>>>>>>>>>
> > >> >>>>>>>>>>>> i followed this<
> > >> >>>>> https://blog.cloudera.com/blog/2013/10/what-are-hbase-znodes/>
> > >> >>>>>>>>>>>> cloudera
> > >> >>>>>>>>>>>> article about znodes and this is what i found,
> > >> >>>>>>>>>>>>
> > >> >>>>>>>>>>>> *$[zk: localhost:2181(CONNECTED) 14] ls /hbase*
> > >> >>>>>>>>>>>> *[splitlog, online-snapshot, unassigned, table94,
> > >> >>>>>>>> root-region-server,
> > >> >>>>>>>>>> rs,
> > >> >>>>>>>>>>>> backup-masters, table, draining, master, shutdown,
> > >> >>> hbaseid]*
> > >> >>>>>>>>>>>>
> > >> >>>>>>>>>>>> all the tables were present in /hbase/table94, where as
> > >> >>>>>>>> /hbase/table
> > >> >>>>>>>>> is
> > >> >>>>>>>>>>>> empty.
> > >> >>>>>>>>>>>>
> > >> >>>>>>>>>>>> i know what is the problem now,
> > >> >>>>>>>>>>>> but i don't know how to solve it.
> > >> >>>>>>>>>>>>
> > >> >>>>>>>>>>>> can someone help me with this issue.
> > >> >>>>>>>>>>>>
> > >> >>>>>>>>>>>> Thanks,
> > >> >>>>>>>>>>>> Yeshwanth
> > >> >>
> > >>
> > >
> > >
> >
>
Re: Unable to get data of znode /hbase/table/mytable.
Posted by Ted Yu <yu...@gmail.com>.
I am adding cdh users mailing list where you would get good response to the
issue below.
Cheers
On Sun, Apr 27, 2014 at 10:30 AM, yeshwanth kumar <ye...@gmail.com>wrote:
> hi ted,
>
> i replaced the hbase 0.94.7 with cdh 0.94.6 version.
> i don't see any errors in regionservers log but i am getting this
> exception in my tomcat webapp.
>
> javax.servlet.ServletException: java.lang.NoClassDefFoundError:
> org/apache/hadoop/net/SocketInputWrapper
>
> com.sun.jersey.spi.container.servlet.WebComponent.service(WebComponent.java:420)
>
> com.sun.jersey.spi.container.servlet.ServletContainer.service(ServletContainer.java:538)
>
> com.sun.jersey.spi.container.servlet.ServletContainer.service(ServletContainer.java:716)
> javax.servlet.http.HttpServlet.service(HttpServlet.java:728)
>
> org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
>
> *root cause*
>
> java.lang.NoClassDefFoundError: org/apache/hadoop/net/SocketInputWrapper
>
> org.apache.hadoop.hbase.ipc.HBaseClient.createConnection(HBaseClient.java:255)
>
> org.apache.hadoop.hbase.ipc.HBaseClient.getConnection(HBaseClient.java:1120)
> org.apache.hadoop.hbase.ipc.HBaseClient.call(HBaseClient.java:980)
>
> org.apache.hadoop.hbase.ipc.WritableRpcEngine$Invoker.invoke(WritableRpcEngine.java:86)
> com.sun.proxy.$Proxy66.getProtocolVersion(Unknown Source)
>
> org.apache.hadoop.hbase.ipc.WritableRpcEngine.getProxy(WritableRpcEngine.java:138)
>
> org.apache.hadoop.hbase.ipc.HBaseRPC.waitForProxy(HBaseRPC.java:208)
>
> org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.getHRegionConnection(HConnectionManager.java:1358)
>
> org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.getHRegionConnection(HConnectionManager.java:1317)
>
> org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.getHRegionConnection(HConnectionManager.java:1304)
>
> org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.locateRegionInMeta(HConnectionManager.java:990)
>
> org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.locateRegion(HConnectionManager.java:885)
>
> org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.locateRegionInMeta(HConnectionManager.java:987)
>
> org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.locateRegion(HConnectionManager.java:889)
>
> org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.locateRegion(HConnectionManager.java:846)
> org.apache.hadoop.hbase.client.HTable.finishSetup(HTable.java:270)
> org.apache.hadoop.hbase.client.HTable.<init>(HTable.java:210)
> org.apache.hadoop.hbase.client.HTable.<init>(HTable.java:169)
>
> com.serendio.penton.rest.server.CsvMgmtEndPoint.<init>(CsvMgmtEndPoint.java:76)
> sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native
> Method)
>
> sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57)
>
> sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
> java.lang.reflect.Constructor.newInstance(Constructor.java:526)
>
> com.sun.jersey.server.spi.component.ResourceComponentConstructor._construct(ResourceComponentConstructor.java:191)
>
> com.sun.jersey.server.spi.component.ResourceComponentConstructor.construct(ResourceComponentConstructor.java:179)
>
> com.sun.jersey.server.impl.resource.PerRequestFactory$PerRequest._getInstance(PerRequestFactory.java:182)
>
> com.sun.jersey.server.impl.resource.PerRequestFactory$AbstractPerRequest.getInstance(PerRequestFactory.java:144)
>
> com.sun.jersey.server.impl.application.WebApplicationContext.getResource(WebApplicationContext.java:238)
>
> com.sun.jersey.server.impl.uri.rules.ResourceClassRule.accept(ResourceClassRule.java:83)
>
> com.sun.jersey.server.impl.uri.rules.RightHandPathRule.accept(RightHandPathRule.java:147)
>
> com.sun.jersey.server.impl.uri.rules.RootResourceClassesRule.accept(RootResourceClassesRule.java:84)
>
> com.sun.jersey.server.impl.application.WebApplicationImpl._handleRequest(WebApplicationImpl.java:1511)
>
> com.sun.jersey.server.impl.application.WebApplicationImpl._handleRequest(WebApplicationImpl.java:1442)
>
> com.sun.jersey.server.impl.application.WebApplicationImpl.handleRequest(WebApplicationImpl.java:1391)
>
> com.sun.jersey.server.impl.application.WebApplicationImpl.handleRequest(WebApplicationImpl.java:1381)
>
> com.sun.jersey.spi.container.servlet.WebComponent.service(WebComponent.java:416)
>
> com.sun.jersey.spi.container.servlet.ServletContainer.service(ServletContainer.java:538)
>
> com.sun.jersey.spi.container.servlet.ServletContainer.service(ServletContainer.java:716)
> javax.servlet.http.HttpServlet.service(HttpServlet.java:728)
>
> org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
>
>
> here's the pom i specified
>
> <dependency>
> <groupId>org.apache.hbase</groupId>
> <artifactId>hbase</artifactId>
> <version>0.94.6-cdh4.5.0</version>
> <exclusions>
> <exclusion>
> <groupId> org.mortbay.jetty</groupId>
> <artifactId>jetty</artifactId>
> </exclusion>
> <exclusion>
> <groupId> org.mortbay.jetty</groupId>
> <artifactId>jetty-util</artifactId>
> </exclusion>
> <exclusion>
> <groupId> org.mortbay.jetty</groupId>
> <artifactId>jsp-api-2.1</artifactId>
> </exclusion>
> <exclusion>
> <groupId> org.mortbay.jetty</groupId>
> <artifactId>jsp-2.1</artifactId>
> </exclusion>
> <exclusion>
> <groupId> org.mortbay.jetty</groupId>
> <artifactId>servlet-api-2.5</artifactId>
> </exclusion>
> <exclusion>
> <groupId>tomcat</groupId>
> <artifactId>jasper-runtime</artifactId>
> </exclusion>
> <exclusion>
> <groupId>tomcat</groupId>
> <artifactId>jasper-compiler</artifactId>
> </exclusion>
> </exclusions>
> </dependency>
>
> can you help me out with this issue.
>
> thanks,
> yeshwanth.
>
>
>
>
>
> On Sun, Apr 27, 2014 at 10:32 PM, yeshwanth kumar <yeshwanth43@gmail.com
> >wrote:
>
> > here's the code snippet <http://pastebin.com/AGh7mTNT>
> >
> > thanks,
> > yeshwanth
> >
> >
> > On Sun, Apr 27, 2014 at 10:20 PM, Ted Yu <yu...@gmail.com> wrote:
> >
> >> Can you show us code snippet where you add filter to Scan object ?
> >>
> >> Thanks
> >>
> >> On Apr 27, 2014, at 9:43 AM, yeshwanth kumar <ye...@gmail.com>
> >> wrote:
> >>
> >> > hi ted,
> >> >
> >> > i am using fuzzyrow filter while scanning a table.
> >> > my cluster is running on HBase 0.94.6-cdh4.5.0
> >> > but in my webapp i specified hbase 0.94.7. dependency.
> >> >
> >> > even after changing the dependency i still see the same error.
> >> >
> >> > thanks,
> >> > yeshwanth.
> >> >
> >> >
> >> >
> >> >
> >> > On Sun, Apr 27, 2014 at 10:03 PM, Ted Yu <yu...@gmail.com> wrote:
> >> >
> >> >> Did the exception below happen when you were performing some query on
> >> the
> >> >> region server ?
> >> >>
> >> >> Can you tell us a bit more whether your query uses FilterList ?
> >> >>
> >> >> Thanks
> >> >>
> >> >>
> >> >> On Sun, Apr 27, 2014 at 9:28 AM, yeshwanth kumar <
> >> yeshwanth43@gmail.com
> >> >>> wrote:
> >> >>
> >> >>> hi jean,
> >> >>>
> >> >>> i am using HBase 0.94.6-cdh4.5.0
> >> >>>
> >> >>> i found this in regionservers log,
> >> >>>
> >> >>> org.apache.hadoop.hbase.io.HbaseObjectWritable
> >> >>> Error in readFields
> >> >>> java.lang.ClassCastException:
> >> >>> org.apache.hadoop.hbase.snapshot.HSnapshotDescription cannot be cast
> >> to
> >> >>> org.apache.hadoop.hbase.filter.Filter
> >> >>> at
> >> >>>
> >>
> org.apache.hadoop.hbase.filter.FilterList.readFields(FilterList.java:276)
> >> >>> at org.apache.hadoop.hbase.client.Scan.readFields(Scan.java:591)
> >> >>> at
> >> >>
> >>
> org.apache.hadoop.hbase.io.HbaseObjectWritable.readObject(HbaseObjectWritable.java:689)
> >> >>> at
> >> org.apache.hadoop.hbase.ipc.Invocation.readFields(Invocation.java:127)
> >> >>> at
> >> >>
> >>
> org.apache.hadoop.hbase.ipc.HBaseServer$Connection.processData(HBaseServer.java:1313)
> >> >>> at
> >> >>
> >>
> org.apache.hadoop.hbase.ipc.HBaseServer$Connection.readAndProcess(HBaseServer.java:1228)
> >> >>> at
> >> >>
> >>
> org.apache.hadoop.hbase.ipc.HBaseServer$Listener.doRead(HBaseServer.java:750)
> >> >>> at
> >> >>
> >>
> org.apache.hadoop.hbase.ipc.HBaseServer$Listener$Reader.doRunLoop(HBaseServer.java:541)
> >> >>> at
> >> >>
> >>
> org.apache.hadoop.hbase.ipc.HBaseServer$Listener$Reader.run(HBaseServer.java:516)
> >> >>> at
> >> >>
> >>
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
> >> >>> at
> >> >>
> >>
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
> >> >>> at java.lang.Thread.run(Thread.java:744)
> >> >>>
> >> >>> how can i fix this dependency issue.
> >> >>>
> >> >>>
> >> >>>
> >> >>>
> >> >>> On Fri, Apr 25, 2014 at 9:06 PM, yeshwanth kumar <
> >> yeshwanth43@gmail.com
> >> >>>> wrote:
> >> >>>
> >> >>>> hi jean,
> >> >>>>
> >> >>>> i haven't written any piece of code to workaround znode,
> >> >>>> one of my rest endpoint in webapp reads data from hbase.
> >> >>>> it is giving me empty set.
> >> >>>> all if found in the logs is
> >> >>>>
> >> >>>> Reading reply sessionid:0x145974472760023, packet:: clientPath:null
> >> >>>> serverPath:null finished:false header:: 42,4 replyHeader::
> >> >>>> 42,77309411972,-101 request:: '/hbase/table/NCSVs,F response::
> >> >>>> hconnection-0x145974472760023 Unable to get data of znode
> >> >>>> /hbase/table/NCSVs because node does not exist (not an error)
> >> >>>>
> >> >>>> this is what i found in zookeeper client
> >> >>>>
> >> >>>> *$[zk: localhost:2181(CONNECTED) 14] ls /hbase*
> >> >>>> *[splitlog, online-snapshot, unassigned, table94,
> root-region-server,
> >> >> rs,
> >> >>>> backup-masters, table, draining, master, shutdown, hbaseid]*
> >> >>>>
> >> >>>>
> >> >>>> -yeshwanth
> >> >>>>
> >> >>>>
> >> >>>> On Fri, Apr 25, 2014 at 8:18 PM, Jean-Marc Spaggiari <
> >> >>>> jean-marc@spaggiari.org> wrote:
> >> >>>>
> >> >>>>> Hi Yeshwanth,
> >> >>>>>
> >> >>>>> What is your webapp looking at the ZNode? If you should the Java
> >> >> client
> >> >>>>> and
> >> >>>>> not look at the ZNode. Not getting why it's looking there. Do yo
> >> >> uknow?
> >> >>>>>
> >> >>>>> JM
> >> >>>>>
> >> >>>>>
> >> >>>>> 2014-04-25 2:01 GMT-04:00 yeshwanth kumar <yeshwanth43@gmail.com
> >:
> >> >>>>>
> >> >>>>>> hi matteo,
> >> >>>>>>
> >> >>>>>> my problem isn't solved yet.
> >> >>>>>> webapp isn't reading data from hbase.
> >> >>>>>> all i see in logs is znode /hbase/table/mytable doesn't exist.
> >> >>>>>> but all my tables are present in /hbase/table94/
> >> >>>>>>
> >> >>>>>> so how can i fix this problem.
> >> >>>>>>
> >> >>>>>> thanks,
> >> >>>>>> yeshwanth
> >> >>>>>>
> >> >>>>>>
> >> >>>>>>
> >> >>>>>>
> >> >>>>>> On Tue, Apr 22, 2014 at 9:58 PM, Matteo Bertozzi <
> >> >>>>> theo.bertozzi@gmail.com
> >> >>>>>>> wrote:
> >> >>>>>>
> >> >>>>>>> that is already done by the server.
> >> >>>>>>> The ZooKeeperWatcher.java is using conf.get(
> >> >>>>>>> "zookeeper.znode.masterTableEnableDisable", "table94"));
> >> >>>>>>>
> >> >>>>>>> anyway, why are you looking at the znodes?
> >> >>>>>>> a client application should never look at the znodes.
> >> >>>>>>> The znodes are only carrying transient informations used for
> >> >>>>> coordination
> >> >>>>>>>
> >> >>>>>>> Matteo
> >> >>>>>>>
> >> >>>>>>>
> >> >>>>>>>
> >> >>>>>>> On Tue, Apr 22, 2014 at 9:20 AM, yeshwanth kumar <
> >> >>>>> yeshwanth43@gmail.com
> >> >>>>>>>> wrote:
> >> >>>>>>>
> >> >>>>>>>> hi matteo,
> >> >>>>>>>>
> >> >>>>>>>> how do i specify hbase znode to use /hbase/table94 instead of
> >> >>>>>>> /hbase/table
> >> >>>>>>>>
> >> >>>>>>>> thanks
> >> >>>>>>>>
> >> >>>>>>>>
> >> >>>>>>>> On Tue, Apr 22, 2014 at 9:40 PM, Matteo Bertozzi <
> >> >>>>>>> theo.bertozzi@gmail.com
> >> >>>>>>>>> wrote:
> >> >>>>>>>>
> >> >>>>>>>>> On Tue, Apr 22, 2014 at 9:00 AM, yeshwanth kumar <
> >> >>>>>>> yeshwanth43@gmail.com
> >> >>>>>>>>>> wrote:
> >> >>>>>>>>>
> >> >>>>>>>>>> @matteo
> >> >>>>>>>>>> present znode is at /hbase/table where it is empty.
> >> >>>>>>>>>> where as all my tables are present in /hbase/table94
> >> >>>>>>>>>> now webapp isn't reading the data from hbase.
> >> >>>>>>>>>
> >> >>>>>>>>> cdh 4.5.0 doesn't write in /hbase/table due to a compatibility
> >> >>>>> issue
> >> >>>>>>>>> /hbase/table94
> >> >>>>>>>>> is used.
> >> >>>>>>>>> (see HBASE-6710 for details)
> >> >>>>>>>>>
> >> >>>>>>>>> On Tue, Apr 22, 2014 at 6:56 PM, Matteo Bertozzi <
> >> >>>>>>>> theo.bertozzi@gmail.com
> >> >>>>>>>>>> wrote:
> >> >>>>>>>>>
> >> >>>>>>>>>>
> >> >>>>>>>>>>> /hbase/table94 is a "compatibility" znode that replaces
> >> >>>>>>> /hbase/table
> >> >>>>>>>>>>> if you want more details take a look at HBASE-6710.
> >> >>>>>>>>>>>
> >> >>>>>>>>>>> what is the problem of looking into /hbase/table94 instead
> >> >>> of
> >> >>>>>>>>>> /hbase/table?
> >> >>>>>>>>>>>
> >> >>>>>>>>>>> Matteo
> >> >>>>>>>>>>>
> >> >>>>>>>>>>>
> >> >>>>>>>>>>>
> >> >>>>>>>>>>> On Tue, Apr 22, 2014 at 5:18 AM, yeshwanth kumar <
> >> >>>>>>>>> yeshwanth43@gmail.com
> >> >>>>>>>>>>>> wrote:
> >> >>>>>>>>>>>
> >> >>>>>>>>>>>> Hi,
> >> >>>>>>>>>>>>
> >> >>>>>>>>>>>>
> >> >>>>>>>>>>>> i am running webapp written on jaxrs framework which
> >> >>>>> performs
> >> >>>>>>> CRUD
> >> >>>>>>>>>>>> opereations on hbase.
> >> >>>>>>>>>>>>
> >> >>>>>>>>>>>> app was working fine till last week,
> >> >>>>>>>>>>>> now when i perform reading opeartion from hbase i don't
> >> >>> see
> >> >>>>>> any
> >> >>>>>>>>> data,
> >> >>>>>>>>>> i
> >> >>>>>>>>>>>> don't see any errors or exceptions but i found this
> >> >> lines
> >> >>> in
> >> >>>>>> the
> >> >>>>>>>> log
> >> >>>>>>>>>>>>
> >> >>>>>>>>>>>> *""Unable to get data of znode /hbase/table/myTable
> >> >>> because
> >> >>>>>> node
> >> >>>>>>>> does
> >> >>>>>>>>>> not
> >> >>>>>>>>>>>> exist (not an error)"".*
> >> >>>>>>>>>>>>
> >> >>>>>>>>>>>> i followed this<
> >> >>>>> https://blog.cloudera.com/blog/2013/10/what-are-hbase-znodes/>
> >> >>>>>>>>>>>> cloudera
> >> >>>>>>>>>>>> article about znodes and this is what i found,
> >> >>>>>>>>>>>>
> >> >>>>>>>>>>>> *$[zk: localhost:2181(CONNECTED) 14] ls /hbase*
> >> >>>>>>>>>>>> *[splitlog, online-snapshot, unassigned, table94,
> >> >>>>>>>> root-region-server,
> >> >>>>>>>>>> rs,
> >> >>>>>>>>>>>> backup-masters, table, draining, master, shutdown,
> >> >>> hbaseid]*
> >> >>>>>>>>>>>>
> >> >>>>>>>>>>>> all the tables were present in /hbase/table94, where as
> >> >>>>>>>> /hbase/table
> >> >>>>>>>>> is
> >> >>>>>>>>>>>> empty.
> >> >>>>>>>>>>>>
> >> >>>>>>>>>>>> i know what is the problem now,
> >> >>>>>>>>>>>> but i don't know how to solve it.
> >> >>>>>>>>>>>>
> >> >>>>>>>>>>>> can someone help me with this issue.
> >> >>>>>>>>>>>>
> >> >>>>>>>>>>>> Thanks,
> >> >>>>>>>>>>>> Yeshwanth
> >> >>
> >>
> >
> >
>
Re: Unable to get data of znode /hbase/table/mytable.
Posted by yeshwanth kumar <ye...@gmail.com>.
hi ted,
i replaced the hbase 0.94.7 with cdh 0.94.6 version.
i don't see any errors in regionservers log but i am getting this
exception in my tomcat webapp.
javax.servlet.ServletException: java.lang.NoClassDefFoundError:
org/apache/hadoop/net/SocketInputWrapper
com.sun.jersey.spi.container.servlet.WebComponent.service(WebComponent.java:420)
com.sun.jersey.spi.container.servlet.ServletContainer.service(ServletContainer.java:538)
com.sun.jersey.spi.container.servlet.ServletContainer.service(ServletContainer.java:716)
javax.servlet.http.HttpServlet.service(HttpServlet.java:728)
org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
*root cause*
java.lang.NoClassDefFoundError: org/apache/hadoop/net/SocketInputWrapper
org.apache.hadoop.hbase.ipc.HBaseClient.createConnection(HBaseClient.java:255)
org.apache.hadoop.hbase.ipc.HBaseClient.getConnection(HBaseClient.java:1120)
org.apache.hadoop.hbase.ipc.HBaseClient.call(HBaseClient.java:980)
org.apache.hadoop.hbase.ipc.WritableRpcEngine$Invoker.invoke(WritableRpcEngine.java:86)
com.sun.proxy.$Proxy66.getProtocolVersion(Unknown Source)
org.apache.hadoop.hbase.ipc.WritableRpcEngine.getProxy(WritableRpcEngine.java:138)
org.apache.hadoop.hbase.ipc.HBaseRPC.waitForProxy(HBaseRPC.java:208)
org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.getHRegionConnection(HConnectionManager.java:1358)
org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.getHRegionConnection(HConnectionManager.java:1317)
org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.getHRegionConnection(HConnectionManager.java:1304)
org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.locateRegionInMeta(HConnectionManager.java:990)
org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.locateRegion(HConnectionManager.java:885)
org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.locateRegionInMeta(HConnectionManager.java:987)
org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.locateRegion(HConnectionManager.java:889)
org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.locateRegion(HConnectionManager.java:846)
org.apache.hadoop.hbase.client.HTable.finishSetup(HTable.java:270)
org.apache.hadoop.hbase.client.HTable.<init>(HTable.java:210)
org.apache.hadoop.hbase.client.HTable.<init>(HTable.java:169)
com.serendio.penton.rest.server.CsvMgmtEndPoint.<init>(CsvMgmtEndPoint.java:76)
sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57)
sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
java.lang.reflect.Constructor.newInstance(Constructor.java:526)
com.sun.jersey.server.spi.component.ResourceComponentConstructor._construct(ResourceComponentConstructor.java:191)
com.sun.jersey.server.spi.component.ResourceComponentConstructor.construct(ResourceComponentConstructor.java:179)
com.sun.jersey.server.impl.resource.PerRequestFactory$PerRequest._getInstance(PerRequestFactory.java:182)
com.sun.jersey.server.impl.resource.PerRequestFactory$AbstractPerRequest.getInstance(PerRequestFactory.java:144)
com.sun.jersey.server.impl.application.WebApplicationContext.getResource(WebApplicationContext.java:238)
com.sun.jersey.server.impl.uri.rules.ResourceClassRule.accept(ResourceClassRule.java:83)
com.sun.jersey.server.impl.uri.rules.RightHandPathRule.accept(RightHandPathRule.java:147)
com.sun.jersey.server.impl.uri.rules.RootResourceClassesRule.accept(RootResourceClassesRule.java:84)
com.sun.jersey.server.impl.application.WebApplicationImpl._handleRequest(WebApplicationImpl.java:1511)
com.sun.jersey.server.impl.application.WebApplicationImpl._handleRequest(WebApplicationImpl.java:1442)
com.sun.jersey.server.impl.application.WebApplicationImpl.handleRequest(WebApplicationImpl.java:1391)
com.sun.jersey.server.impl.application.WebApplicationImpl.handleRequest(WebApplicationImpl.java:1381)
com.sun.jersey.spi.container.servlet.WebComponent.service(WebComponent.java:416)
com.sun.jersey.spi.container.servlet.ServletContainer.service(ServletContainer.java:538)
com.sun.jersey.spi.container.servlet.ServletContainer.service(ServletContainer.java:716)
javax.servlet.http.HttpServlet.service(HttpServlet.java:728)
org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
here's the pom i specified
<dependency>
<groupId>org.apache.hbase</groupId>
<artifactId>hbase</artifactId>
<version>0.94.6-cdh4.5.0</version>
<exclusions>
<exclusion>
<groupId> org.mortbay.jetty</groupId>
<artifactId>jetty</artifactId>
</exclusion>
<exclusion>
<groupId> org.mortbay.jetty</groupId>
<artifactId>jetty-util</artifactId>
</exclusion>
<exclusion>
<groupId> org.mortbay.jetty</groupId>
<artifactId>jsp-api-2.1</artifactId>
</exclusion>
<exclusion>
<groupId> org.mortbay.jetty</groupId>
<artifactId>jsp-2.1</artifactId>
</exclusion>
<exclusion>
<groupId> org.mortbay.jetty</groupId>
<artifactId>servlet-api-2.5</artifactId>
</exclusion>
<exclusion>
<groupId>tomcat</groupId>
<artifactId>jasper-runtime</artifactId>
</exclusion>
<exclusion>
<groupId>tomcat</groupId>
<artifactId>jasper-compiler</artifactId>
</exclusion>
</exclusions>
</dependency>
can you help me out with this issue.
thanks,
yeshwanth.
On Sun, Apr 27, 2014 at 10:32 PM, yeshwanth kumar <ye...@gmail.com>wrote:
> here's the code snippet <http://pastebin.com/AGh7mTNT>
>
> thanks,
> yeshwanth
>
>
> On Sun, Apr 27, 2014 at 10:20 PM, Ted Yu <yu...@gmail.com> wrote:
>
>> Can you show us code snippet where you add filter to Scan object ?
>>
>> Thanks
>>
>> On Apr 27, 2014, at 9:43 AM, yeshwanth kumar <ye...@gmail.com>
>> wrote:
>>
>> > hi ted,
>> >
>> > i am using fuzzyrow filter while scanning a table.
>> > my cluster is running on HBase 0.94.6-cdh4.5.0
>> > but in my webapp i specified hbase 0.94.7. dependency.
>> >
>> > even after changing the dependency i still see the same error.
>> >
>> > thanks,
>> > yeshwanth.
>> >
>> >
>> >
>> >
>> > On Sun, Apr 27, 2014 at 10:03 PM, Ted Yu <yu...@gmail.com> wrote:
>> >
>> >> Did the exception below happen when you were performing some query on
>> the
>> >> region server ?
>> >>
>> >> Can you tell us a bit more whether your query uses FilterList ?
>> >>
>> >> Thanks
>> >>
>> >>
>> >> On Sun, Apr 27, 2014 at 9:28 AM, yeshwanth kumar <
>> yeshwanth43@gmail.com
>> >>> wrote:
>> >>
>> >>> hi jean,
>> >>>
>> >>> i am using HBase 0.94.6-cdh4.5.0
>> >>>
>> >>> i found this in regionservers log,
>> >>>
>> >>> org.apache.hadoop.hbase.io.HbaseObjectWritable
>> >>> Error in readFields
>> >>> java.lang.ClassCastException:
>> >>> org.apache.hadoop.hbase.snapshot.HSnapshotDescription cannot be cast
>> to
>> >>> org.apache.hadoop.hbase.filter.Filter
>> >>> at
>> >>>
>> org.apache.hadoop.hbase.filter.FilterList.readFields(FilterList.java:276)
>> >>> at org.apache.hadoop.hbase.client.Scan.readFields(Scan.java:591)
>> >>> at
>> >>
>> org.apache.hadoop.hbase.io.HbaseObjectWritable.readObject(HbaseObjectWritable.java:689)
>> >>> at
>> org.apache.hadoop.hbase.ipc.Invocation.readFields(Invocation.java:127)
>> >>> at
>> >>
>> org.apache.hadoop.hbase.ipc.HBaseServer$Connection.processData(HBaseServer.java:1313)
>> >>> at
>> >>
>> org.apache.hadoop.hbase.ipc.HBaseServer$Connection.readAndProcess(HBaseServer.java:1228)
>> >>> at
>> >>
>> org.apache.hadoop.hbase.ipc.HBaseServer$Listener.doRead(HBaseServer.java:750)
>> >>> at
>> >>
>> org.apache.hadoop.hbase.ipc.HBaseServer$Listener$Reader.doRunLoop(HBaseServer.java:541)
>> >>> at
>> >>
>> org.apache.hadoop.hbase.ipc.HBaseServer$Listener$Reader.run(HBaseServer.java:516)
>> >>> at
>> >>
>> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
>> >>> at
>> >>
>> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
>> >>> at java.lang.Thread.run(Thread.java:744)
>> >>>
>> >>> how can i fix this dependency issue.
>> >>>
>> >>>
>> >>>
>> >>>
>> >>> On Fri, Apr 25, 2014 at 9:06 PM, yeshwanth kumar <
>> yeshwanth43@gmail.com
>> >>>> wrote:
>> >>>
>> >>>> hi jean,
>> >>>>
>> >>>> i haven't written any piece of code to workaround znode,
>> >>>> one of my rest endpoint in webapp reads data from hbase.
>> >>>> it is giving me empty set.
>> >>>> all if found in the logs is
>> >>>>
>> >>>> Reading reply sessionid:0x145974472760023, packet:: clientPath:null
>> >>>> serverPath:null finished:false header:: 42,4 replyHeader::
>> >>>> 42,77309411972,-101 request:: '/hbase/table/NCSVs,F response::
>> >>>> hconnection-0x145974472760023 Unable to get data of znode
>> >>>> /hbase/table/NCSVs because node does not exist (not an error)
>> >>>>
>> >>>> this is what i found in zookeeper client
>> >>>>
>> >>>> *$[zk: localhost:2181(CONNECTED) 14] ls /hbase*
>> >>>> *[splitlog, online-snapshot, unassigned, table94, root-region-server,
>> >> rs,
>> >>>> backup-masters, table, draining, master, shutdown, hbaseid]*
>> >>>>
>> >>>>
>> >>>> -yeshwanth
>> >>>>
>> >>>>
>> >>>> On Fri, Apr 25, 2014 at 8:18 PM, Jean-Marc Spaggiari <
>> >>>> jean-marc@spaggiari.org> wrote:
>> >>>>
>> >>>>> Hi Yeshwanth,
>> >>>>>
>> >>>>> What is your webapp looking at the ZNode? If you should the Java
>> >> client
>> >>>>> and
>> >>>>> not look at the ZNode. Not getting why it's looking there. Do yo
>> >> uknow?
>> >>>>>
>> >>>>> JM
>> >>>>>
>> >>>>>
>> >>>>> 2014-04-25 2:01 GMT-04:00 yeshwanth kumar <ye...@gmail.com>:
>> >>>>>
>> >>>>>> hi matteo,
>> >>>>>>
>> >>>>>> my problem isn't solved yet.
>> >>>>>> webapp isn't reading data from hbase.
>> >>>>>> all i see in logs is znode /hbase/table/mytable doesn't exist.
>> >>>>>> but all my tables are present in /hbase/table94/
>> >>>>>>
>> >>>>>> so how can i fix this problem.
>> >>>>>>
>> >>>>>> thanks,
>> >>>>>> yeshwanth
>> >>>>>>
>> >>>>>>
>> >>>>>>
>> >>>>>>
>> >>>>>> On Tue, Apr 22, 2014 at 9:58 PM, Matteo Bertozzi <
>> >>>>> theo.bertozzi@gmail.com
>> >>>>>>> wrote:
>> >>>>>>
>> >>>>>>> that is already done by the server.
>> >>>>>>> The ZooKeeperWatcher.java is using conf.get(
>> >>>>>>> "zookeeper.znode.masterTableEnableDisable", "table94"));
>> >>>>>>>
>> >>>>>>> anyway, why are you looking at the znodes?
>> >>>>>>> a client application should never look at the znodes.
>> >>>>>>> The znodes are only carrying transient informations used for
>> >>>>> coordination
>> >>>>>>>
>> >>>>>>> Matteo
>> >>>>>>>
>> >>>>>>>
>> >>>>>>>
>> >>>>>>> On Tue, Apr 22, 2014 at 9:20 AM, yeshwanth kumar <
>> >>>>> yeshwanth43@gmail.com
>> >>>>>>>> wrote:
>> >>>>>>>
>> >>>>>>>> hi matteo,
>> >>>>>>>>
>> >>>>>>>> how do i specify hbase znode to use /hbase/table94 instead of
>> >>>>>>> /hbase/table
>> >>>>>>>>
>> >>>>>>>> thanks
>> >>>>>>>>
>> >>>>>>>>
>> >>>>>>>> On Tue, Apr 22, 2014 at 9:40 PM, Matteo Bertozzi <
>> >>>>>>> theo.bertozzi@gmail.com
>> >>>>>>>>> wrote:
>> >>>>>>>>
>> >>>>>>>>> On Tue, Apr 22, 2014 at 9:00 AM, yeshwanth kumar <
>> >>>>>>> yeshwanth43@gmail.com
>> >>>>>>>>>> wrote:
>> >>>>>>>>>
>> >>>>>>>>>> @matteo
>> >>>>>>>>>> present znode is at /hbase/table where it is empty.
>> >>>>>>>>>> where as all my tables are present in /hbase/table94
>> >>>>>>>>>> now webapp isn't reading the data from hbase.
>> >>>>>>>>>
>> >>>>>>>>> cdh 4.5.0 doesn't write in /hbase/table due to a compatibility
>> >>>>> issue
>> >>>>>>>>> /hbase/table94
>> >>>>>>>>> is used.
>> >>>>>>>>> (see HBASE-6710 for details)
>> >>>>>>>>>
>> >>>>>>>>> On Tue, Apr 22, 2014 at 6:56 PM, Matteo Bertozzi <
>> >>>>>>>> theo.bertozzi@gmail.com
>> >>>>>>>>>> wrote:
>> >>>>>>>>>
>> >>>>>>>>>>
>> >>>>>>>>>>> /hbase/table94 is a "compatibility" znode that replaces
>> >>>>>>> /hbase/table
>> >>>>>>>>>>> if you want more details take a look at HBASE-6710.
>> >>>>>>>>>>>
>> >>>>>>>>>>> what is the problem of looking into /hbase/table94 instead
>> >>> of
>> >>>>>>>>>> /hbase/table?
>> >>>>>>>>>>>
>> >>>>>>>>>>> Matteo
>> >>>>>>>>>>>
>> >>>>>>>>>>>
>> >>>>>>>>>>>
>> >>>>>>>>>>> On Tue, Apr 22, 2014 at 5:18 AM, yeshwanth kumar <
>> >>>>>>>>> yeshwanth43@gmail.com
>> >>>>>>>>>>>> wrote:
>> >>>>>>>>>>>
>> >>>>>>>>>>>> Hi,
>> >>>>>>>>>>>>
>> >>>>>>>>>>>>
>> >>>>>>>>>>>> i am running webapp written on jaxrs framework which
>> >>>>> performs
>> >>>>>>> CRUD
>> >>>>>>>>>>>> opereations on hbase.
>> >>>>>>>>>>>>
>> >>>>>>>>>>>> app was working fine till last week,
>> >>>>>>>>>>>> now when i perform reading opeartion from hbase i don't
>> >>> see
>> >>>>>> any
>> >>>>>>>>> data,
>> >>>>>>>>>> i
>> >>>>>>>>>>>> don't see any errors or exceptions but i found this
>> >> lines
>> >>> in
>> >>>>>> the
>> >>>>>>>> log
>> >>>>>>>>>>>>
>> >>>>>>>>>>>> *""Unable to get data of znode /hbase/table/myTable
>> >>> because
>> >>>>>> node
>> >>>>>>>> does
>> >>>>>>>>>> not
>> >>>>>>>>>>>> exist (not an error)"".*
>> >>>>>>>>>>>>
>> >>>>>>>>>>>> i followed this<
>> >>>>> https://blog.cloudera.com/blog/2013/10/what-are-hbase-znodes/>
>> >>>>>>>>>>>> cloudera
>> >>>>>>>>>>>> article about znodes and this is what i found,
>> >>>>>>>>>>>>
>> >>>>>>>>>>>> *$[zk: localhost:2181(CONNECTED) 14] ls /hbase*
>> >>>>>>>>>>>> *[splitlog, online-snapshot, unassigned, table94,
>> >>>>>>>> root-region-server,
>> >>>>>>>>>> rs,
>> >>>>>>>>>>>> backup-masters, table, draining, master, shutdown,
>> >>> hbaseid]*
>> >>>>>>>>>>>>
>> >>>>>>>>>>>> all the tables were present in /hbase/table94, where as
>> >>>>>>>> /hbase/table
>> >>>>>>>>> is
>> >>>>>>>>>>>> empty.
>> >>>>>>>>>>>>
>> >>>>>>>>>>>> i know what is the problem now,
>> >>>>>>>>>>>> but i don't know how to solve it.
>> >>>>>>>>>>>>
>> >>>>>>>>>>>> can someone help me with this issue.
>> >>>>>>>>>>>>
>> >>>>>>>>>>>> Thanks,
>> >>>>>>>>>>>> Yeshwanth
>> >>
>>
>
>
Re: Unable to get data of znode /hbase/table/mytable.
Posted by yeshwanth kumar <ye...@gmail.com>.
here's the code snippet <http://pastebin.com/AGh7mTNT>
thanks,
yeshwanth
On Sun, Apr 27, 2014 at 10:20 PM, Ted Yu <yu...@gmail.com> wrote:
> Can you show us code snippet where you add filter to Scan object ?
>
> Thanks
>
> On Apr 27, 2014, at 9:43 AM, yeshwanth kumar <ye...@gmail.com>
> wrote:
>
> > hi ted,
> >
> > i am using fuzzyrow filter while scanning a table.
> > my cluster is running on HBase 0.94.6-cdh4.5.0
> > but in my webapp i specified hbase 0.94.7. dependency.
> >
> > even after changing the dependency i still see the same error.
> >
> > thanks,
> > yeshwanth.
> >
> >
> >
> >
> > On Sun, Apr 27, 2014 at 10:03 PM, Ted Yu <yu...@gmail.com> wrote:
> >
> >> Did the exception below happen when you were performing some query on
> the
> >> region server ?
> >>
> >> Can you tell us a bit more whether your query uses FilterList ?
> >>
> >> Thanks
> >>
> >>
> >> On Sun, Apr 27, 2014 at 9:28 AM, yeshwanth kumar <yeshwanth43@gmail.com
> >>> wrote:
> >>
> >>> hi jean,
> >>>
> >>> i am using HBase 0.94.6-cdh4.5.0
> >>>
> >>> i found this in regionservers log,
> >>>
> >>> org.apache.hadoop.hbase.io.HbaseObjectWritable
> >>> Error in readFields
> >>> java.lang.ClassCastException:
> >>> org.apache.hadoop.hbase.snapshot.HSnapshotDescription cannot be cast to
> >>> org.apache.hadoop.hbase.filter.Filter
> >>> at
> >>>
> org.apache.hadoop.hbase.filter.FilterList.readFields(FilterList.java:276)
> >>> at org.apache.hadoop.hbase.client.Scan.readFields(Scan.java:591)
> >>> at
> >>
> org.apache.hadoop.hbase.io.HbaseObjectWritable.readObject(HbaseObjectWritable.java:689)
> >>> at
> org.apache.hadoop.hbase.ipc.Invocation.readFields(Invocation.java:127)
> >>> at
> >>
> org.apache.hadoop.hbase.ipc.HBaseServer$Connection.processData(HBaseServer.java:1313)
> >>> at
> >>
> org.apache.hadoop.hbase.ipc.HBaseServer$Connection.readAndProcess(HBaseServer.java:1228)
> >>> at
> >>
> org.apache.hadoop.hbase.ipc.HBaseServer$Listener.doRead(HBaseServer.java:750)
> >>> at
> >>
> org.apache.hadoop.hbase.ipc.HBaseServer$Listener$Reader.doRunLoop(HBaseServer.java:541)
> >>> at
> >>
> org.apache.hadoop.hbase.ipc.HBaseServer$Listener$Reader.run(HBaseServer.java:516)
> >>> at
> >>
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
> >>> at
> >>
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
> >>> at java.lang.Thread.run(Thread.java:744)
> >>>
> >>> how can i fix this dependency issue.
> >>>
> >>>
> >>>
> >>>
> >>> On Fri, Apr 25, 2014 at 9:06 PM, yeshwanth kumar <
> yeshwanth43@gmail.com
> >>>> wrote:
> >>>
> >>>> hi jean,
> >>>>
> >>>> i haven't written any piece of code to workaround znode,
> >>>> one of my rest endpoint in webapp reads data from hbase.
> >>>> it is giving me empty set.
> >>>> all if found in the logs is
> >>>>
> >>>> Reading reply sessionid:0x145974472760023, packet:: clientPath:null
> >>>> serverPath:null finished:false header:: 42,4 replyHeader::
> >>>> 42,77309411972,-101 request:: '/hbase/table/NCSVs,F response::
> >>>> hconnection-0x145974472760023 Unable to get data of znode
> >>>> /hbase/table/NCSVs because node does not exist (not an error)
> >>>>
> >>>> this is what i found in zookeeper client
> >>>>
> >>>> *$[zk: localhost:2181(CONNECTED) 14] ls /hbase*
> >>>> *[splitlog, online-snapshot, unassigned, table94, root-region-server,
> >> rs,
> >>>> backup-masters, table, draining, master, shutdown, hbaseid]*
> >>>>
> >>>>
> >>>> -yeshwanth
> >>>>
> >>>>
> >>>> On Fri, Apr 25, 2014 at 8:18 PM, Jean-Marc Spaggiari <
> >>>> jean-marc@spaggiari.org> wrote:
> >>>>
> >>>>> Hi Yeshwanth,
> >>>>>
> >>>>> What is your webapp looking at the ZNode? If you should the Java
> >> client
> >>>>> and
> >>>>> not look at the ZNode. Not getting why it's looking there. Do yo
> >> uknow?
> >>>>>
> >>>>> JM
> >>>>>
> >>>>>
> >>>>> 2014-04-25 2:01 GMT-04:00 yeshwanth kumar <ye...@gmail.com>:
> >>>>>
> >>>>>> hi matteo,
> >>>>>>
> >>>>>> my problem isn't solved yet.
> >>>>>> webapp isn't reading data from hbase.
> >>>>>> all i see in logs is znode /hbase/table/mytable doesn't exist.
> >>>>>> but all my tables are present in /hbase/table94/
> >>>>>>
> >>>>>> so how can i fix this problem.
> >>>>>>
> >>>>>> thanks,
> >>>>>> yeshwanth
> >>>>>>
> >>>>>>
> >>>>>>
> >>>>>>
> >>>>>> On Tue, Apr 22, 2014 at 9:58 PM, Matteo Bertozzi <
> >>>>> theo.bertozzi@gmail.com
> >>>>>>> wrote:
> >>>>>>
> >>>>>>> that is already done by the server.
> >>>>>>> The ZooKeeperWatcher.java is using conf.get(
> >>>>>>> "zookeeper.znode.masterTableEnableDisable", "table94"));
> >>>>>>>
> >>>>>>> anyway, why are you looking at the znodes?
> >>>>>>> a client application should never look at the znodes.
> >>>>>>> The znodes are only carrying transient informations used for
> >>>>> coordination
> >>>>>>>
> >>>>>>> Matteo
> >>>>>>>
> >>>>>>>
> >>>>>>>
> >>>>>>> On Tue, Apr 22, 2014 at 9:20 AM, yeshwanth kumar <
> >>>>> yeshwanth43@gmail.com
> >>>>>>>> wrote:
> >>>>>>>
> >>>>>>>> hi matteo,
> >>>>>>>>
> >>>>>>>> how do i specify hbase znode to use /hbase/table94 instead of
> >>>>>>> /hbase/table
> >>>>>>>>
> >>>>>>>> thanks
> >>>>>>>>
> >>>>>>>>
> >>>>>>>> On Tue, Apr 22, 2014 at 9:40 PM, Matteo Bertozzi <
> >>>>>>> theo.bertozzi@gmail.com
> >>>>>>>>> wrote:
> >>>>>>>>
> >>>>>>>>> On Tue, Apr 22, 2014 at 9:00 AM, yeshwanth kumar <
> >>>>>>> yeshwanth43@gmail.com
> >>>>>>>>>> wrote:
> >>>>>>>>>
> >>>>>>>>>> @matteo
> >>>>>>>>>> present znode is at /hbase/table where it is empty.
> >>>>>>>>>> where as all my tables are present in /hbase/table94
> >>>>>>>>>> now webapp isn't reading the data from hbase.
> >>>>>>>>>
> >>>>>>>>> cdh 4.5.0 doesn't write in /hbase/table due to a compatibility
> >>>>> issue
> >>>>>>>>> /hbase/table94
> >>>>>>>>> is used.
> >>>>>>>>> (see HBASE-6710 for details)
> >>>>>>>>>
> >>>>>>>>> On Tue, Apr 22, 2014 at 6:56 PM, Matteo Bertozzi <
> >>>>>>>> theo.bertozzi@gmail.com
> >>>>>>>>>> wrote:
> >>>>>>>>>
> >>>>>>>>>>
> >>>>>>>>>>> /hbase/table94 is a "compatibility" znode that replaces
> >>>>>>> /hbase/table
> >>>>>>>>>>> if you want more details take a look at HBASE-6710.
> >>>>>>>>>>>
> >>>>>>>>>>> what is the problem of looking into /hbase/table94 instead
> >>> of
> >>>>>>>>>> /hbase/table?
> >>>>>>>>>>>
> >>>>>>>>>>> Matteo
> >>>>>>>>>>>
> >>>>>>>>>>>
> >>>>>>>>>>>
> >>>>>>>>>>> On Tue, Apr 22, 2014 at 5:18 AM, yeshwanth kumar <
> >>>>>>>>> yeshwanth43@gmail.com
> >>>>>>>>>>>> wrote:
> >>>>>>>>>>>
> >>>>>>>>>>>> Hi,
> >>>>>>>>>>>>
> >>>>>>>>>>>>
> >>>>>>>>>>>> i am running webapp written on jaxrs framework which
> >>>>> performs
> >>>>>>> CRUD
> >>>>>>>>>>>> opereations on hbase.
> >>>>>>>>>>>>
> >>>>>>>>>>>> app was working fine till last week,
> >>>>>>>>>>>> now when i perform reading opeartion from hbase i don't
> >>> see
> >>>>>> any
> >>>>>>>>> data,
> >>>>>>>>>> i
> >>>>>>>>>>>> don't see any errors or exceptions but i found this
> >> lines
> >>> in
> >>>>>> the
> >>>>>>>> log
> >>>>>>>>>>>>
> >>>>>>>>>>>> *""Unable to get data of znode /hbase/table/myTable
> >>> because
> >>>>>> node
> >>>>>>>> does
> >>>>>>>>>> not
> >>>>>>>>>>>> exist (not an error)"".*
> >>>>>>>>>>>>
> >>>>>>>>>>>> i followed this<
> >>>>> https://blog.cloudera.com/blog/2013/10/what-are-hbase-znodes/>
> >>>>>>>>>>>> cloudera
> >>>>>>>>>>>> article about znodes and this is what i found,
> >>>>>>>>>>>>
> >>>>>>>>>>>> *$[zk: localhost:2181(CONNECTED) 14] ls /hbase*
> >>>>>>>>>>>> *[splitlog, online-snapshot, unassigned, table94,
> >>>>>>>> root-region-server,
> >>>>>>>>>> rs,
> >>>>>>>>>>>> backup-masters, table, draining, master, shutdown,
> >>> hbaseid]*
> >>>>>>>>>>>>
> >>>>>>>>>>>> all the tables were present in /hbase/table94, where as
> >>>>>>>> /hbase/table
> >>>>>>>>> is
> >>>>>>>>>>>> empty.
> >>>>>>>>>>>>
> >>>>>>>>>>>> i know what is the problem now,
> >>>>>>>>>>>> but i don't know how to solve it.
> >>>>>>>>>>>>
> >>>>>>>>>>>> can someone help me with this issue.
> >>>>>>>>>>>>
> >>>>>>>>>>>> Thanks,
> >>>>>>>>>>>> Yeshwanth
> >>
>
Re: Unable to get data of znode /hbase/table/mytable.
Posted by Ted Yu <yu...@gmail.com>.
Can you show us code snippet where you add filter to Scan object ?
Thanks
On Apr 27, 2014, at 9:43 AM, yeshwanth kumar <ye...@gmail.com> wrote:
> hi ted,
>
> i am using fuzzyrow filter while scanning a table.
> my cluster is running on HBase 0.94.6-cdh4.5.0
> but in my webapp i specified hbase 0.94.7. dependency.
>
> even after changing the dependency i still see the same error.
>
> thanks,
> yeshwanth.
>
>
>
>
> On Sun, Apr 27, 2014 at 10:03 PM, Ted Yu <yu...@gmail.com> wrote:
>
>> Did the exception below happen when you were performing some query on the
>> region server ?
>>
>> Can you tell us a bit more whether your query uses FilterList ?
>>
>> Thanks
>>
>>
>> On Sun, Apr 27, 2014 at 9:28 AM, yeshwanth kumar <yeshwanth43@gmail.com
>>> wrote:
>>
>>> hi jean,
>>>
>>> i am using HBase 0.94.6-cdh4.5.0
>>>
>>> i found this in regionservers log,
>>>
>>> org.apache.hadoop.hbase.io.HbaseObjectWritable
>>> Error in readFields
>>> java.lang.ClassCastException:
>>> org.apache.hadoop.hbase.snapshot.HSnapshotDescription cannot be cast to
>>> org.apache.hadoop.hbase.filter.Filter
>>> at
>>> org.apache.hadoop.hbase.filter.FilterList.readFields(FilterList.java:276)
>>> at org.apache.hadoop.hbase.client.Scan.readFields(Scan.java:591)
>>> at
>> org.apache.hadoop.hbase.io.HbaseObjectWritable.readObject(HbaseObjectWritable.java:689)
>>> at org.apache.hadoop.hbase.ipc.Invocation.readFields(Invocation.java:127)
>>> at
>> org.apache.hadoop.hbase.ipc.HBaseServer$Connection.processData(HBaseServer.java:1313)
>>> at
>> org.apache.hadoop.hbase.ipc.HBaseServer$Connection.readAndProcess(HBaseServer.java:1228)
>>> at
>> org.apache.hadoop.hbase.ipc.HBaseServer$Listener.doRead(HBaseServer.java:750)
>>> at
>> org.apache.hadoop.hbase.ipc.HBaseServer$Listener$Reader.doRunLoop(HBaseServer.java:541)
>>> at
>> org.apache.hadoop.hbase.ipc.HBaseServer$Listener$Reader.run(HBaseServer.java:516)
>>> at
>> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
>>> at
>> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
>>> at java.lang.Thread.run(Thread.java:744)
>>>
>>> how can i fix this dependency issue.
>>>
>>>
>>>
>>>
>>> On Fri, Apr 25, 2014 at 9:06 PM, yeshwanth kumar <yeshwanth43@gmail.com
>>>> wrote:
>>>
>>>> hi jean,
>>>>
>>>> i haven't written any piece of code to workaround znode,
>>>> one of my rest endpoint in webapp reads data from hbase.
>>>> it is giving me empty set.
>>>> all if found in the logs is
>>>>
>>>> Reading reply sessionid:0x145974472760023, packet:: clientPath:null
>>>> serverPath:null finished:false header:: 42,4 replyHeader::
>>>> 42,77309411972,-101 request:: '/hbase/table/NCSVs,F response::
>>>> hconnection-0x145974472760023 Unable to get data of znode
>>>> /hbase/table/NCSVs because node does not exist (not an error)
>>>>
>>>> this is what i found in zookeeper client
>>>>
>>>> *$[zk: localhost:2181(CONNECTED) 14] ls /hbase*
>>>> *[splitlog, online-snapshot, unassigned, table94, root-region-server,
>> rs,
>>>> backup-masters, table, draining, master, shutdown, hbaseid]*
>>>>
>>>>
>>>> -yeshwanth
>>>>
>>>>
>>>> On Fri, Apr 25, 2014 at 8:18 PM, Jean-Marc Spaggiari <
>>>> jean-marc@spaggiari.org> wrote:
>>>>
>>>>> Hi Yeshwanth,
>>>>>
>>>>> What is your webapp looking at the ZNode? If you should the Java
>> client
>>>>> and
>>>>> not look at the ZNode. Not getting why it's looking there. Do yo
>> uknow?
>>>>>
>>>>> JM
>>>>>
>>>>>
>>>>> 2014-04-25 2:01 GMT-04:00 yeshwanth kumar <ye...@gmail.com>:
>>>>>
>>>>>> hi matteo,
>>>>>>
>>>>>> my problem isn't solved yet.
>>>>>> webapp isn't reading data from hbase.
>>>>>> all i see in logs is znode /hbase/table/mytable doesn't exist.
>>>>>> but all my tables are present in /hbase/table94/
>>>>>>
>>>>>> so how can i fix this problem.
>>>>>>
>>>>>> thanks,
>>>>>> yeshwanth
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>> On Tue, Apr 22, 2014 at 9:58 PM, Matteo Bertozzi <
>>>>> theo.bertozzi@gmail.com
>>>>>>> wrote:
>>>>>>
>>>>>>> that is already done by the server.
>>>>>>> The ZooKeeperWatcher.java is using conf.get(
>>>>>>> "zookeeper.znode.masterTableEnableDisable", "table94"));
>>>>>>>
>>>>>>> anyway, why are you looking at the znodes?
>>>>>>> a client application should never look at the znodes.
>>>>>>> The znodes are only carrying transient informations used for
>>>>> coordination
>>>>>>>
>>>>>>> Matteo
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> On Tue, Apr 22, 2014 at 9:20 AM, yeshwanth kumar <
>>>>> yeshwanth43@gmail.com
>>>>>>>> wrote:
>>>>>>>
>>>>>>>> hi matteo,
>>>>>>>>
>>>>>>>> how do i specify hbase znode to use /hbase/table94 instead of
>>>>>>> /hbase/table
>>>>>>>>
>>>>>>>> thanks
>>>>>>>>
>>>>>>>>
>>>>>>>> On Tue, Apr 22, 2014 at 9:40 PM, Matteo Bertozzi <
>>>>>>> theo.bertozzi@gmail.com
>>>>>>>>> wrote:
>>>>>>>>
>>>>>>>>> On Tue, Apr 22, 2014 at 9:00 AM, yeshwanth kumar <
>>>>>>> yeshwanth43@gmail.com
>>>>>>>>>> wrote:
>>>>>>>>>
>>>>>>>>>> @matteo
>>>>>>>>>> present znode is at /hbase/table where it is empty.
>>>>>>>>>> where as all my tables are present in /hbase/table94
>>>>>>>>>> now webapp isn't reading the data from hbase.
>>>>>>>>>
>>>>>>>>> cdh 4.5.0 doesn't write in /hbase/table due to a compatibility
>>>>> issue
>>>>>>>>> /hbase/table94
>>>>>>>>> is used.
>>>>>>>>> (see HBASE-6710 for details)
>>>>>>>>>
>>>>>>>>> On Tue, Apr 22, 2014 at 6:56 PM, Matteo Bertozzi <
>>>>>>>> theo.bertozzi@gmail.com
>>>>>>>>>> wrote:
>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>> /hbase/table94 is a "compatibility" znode that replaces
>>>>>>> /hbase/table
>>>>>>>>>>> if you want more details take a look at HBASE-6710.
>>>>>>>>>>>
>>>>>>>>>>> what is the problem of looking into /hbase/table94 instead
>>> of
>>>>>>>>>> /hbase/table?
>>>>>>>>>>>
>>>>>>>>>>> Matteo
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>> On Tue, Apr 22, 2014 at 5:18 AM, yeshwanth kumar <
>>>>>>>>> yeshwanth43@gmail.com
>>>>>>>>>>>> wrote:
>>>>>>>>>>>
>>>>>>>>>>>> Hi,
>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>> i am running webapp written on jaxrs framework which
>>>>> performs
>>>>>>> CRUD
>>>>>>>>>>>> opereations on hbase.
>>>>>>>>>>>>
>>>>>>>>>>>> app was working fine till last week,
>>>>>>>>>>>> now when i perform reading opeartion from hbase i don't
>>> see
>>>>>> any
>>>>>>>>> data,
>>>>>>>>>> i
>>>>>>>>>>>> don't see any errors or exceptions but i found this
>> lines
>>> in
>>>>>> the
>>>>>>>> log
>>>>>>>>>>>>
>>>>>>>>>>>> *""Unable to get data of znode /hbase/table/myTable
>>> because
>>>>>> node
>>>>>>>> does
>>>>>>>>>> not
>>>>>>>>>>>> exist (not an error)"".*
>>>>>>>>>>>>
>>>>>>>>>>>> i followed this<
>>>>> https://blog.cloudera.com/blog/2013/10/what-are-hbase-znodes/>
>>>>>>>>>>>> cloudera
>>>>>>>>>>>> article about znodes and this is what i found,
>>>>>>>>>>>>
>>>>>>>>>>>> *$[zk: localhost:2181(CONNECTED) 14] ls /hbase*
>>>>>>>>>>>> *[splitlog, online-snapshot, unassigned, table94,
>>>>>>>> root-region-server,
>>>>>>>>>> rs,
>>>>>>>>>>>> backup-masters, table, draining, master, shutdown,
>>> hbaseid]*
>>>>>>>>>>>>
>>>>>>>>>>>> all the tables were present in /hbase/table94, where as
>>>>>>>> /hbase/table
>>>>>>>>> is
>>>>>>>>>>>> empty.
>>>>>>>>>>>>
>>>>>>>>>>>> i know what is the problem now,
>>>>>>>>>>>> but i don't know how to solve it.
>>>>>>>>>>>>
>>>>>>>>>>>> can someone help me with this issue.
>>>>>>>>>>>>
>>>>>>>>>>>> Thanks,
>>>>>>>>>>>> Yeshwanth
>>
Re: Unable to get data of znode /hbase/table/mytable.
Posted by yeshwanth kumar <ye...@gmail.com>.
hi ted,
i am using fuzzyrow filter while scanning a table.
my cluster is running on HBase 0.94.6-cdh4.5.0
but in my webapp i specified hbase 0.94.7. dependency.
even after changing the dependency i still see the same error.
thanks,
yeshwanth.
On Sun, Apr 27, 2014 at 10:03 PM, Ted Yu <yu...@gmail.com> wrote:
> Did the exception below happen when you were performing some query on the
> region server ?
>
> Can you tell us a bit more whether your query uses FilterList ?
>
> Thanks
>
>
> On Sun, Apr 27, 2014 at 9:28 AM, yeshwanth kumar <yeshwanth43@gmail.com
> >wrote:
>
> > hi jean,
> >
> > i am using HBase 0.94.6-cdh4.5.0
> >
> > i found this in regionservers log,
> >
> > org.apache.hadoop.hbase.io.HbaseObjectWritable
> > Error in readFields
> > java.lang.ClassCastException:
> > org.apache.hadoop.hbase.snapshot.HSnapshotDescription cannot be cast to
> > org.apache.hadoop.hbase.filter.Filter
> > at
> > org.apache.hadoop.hbase.filter.FilterList.readFields(FilterList.java:276)
> > at org.apache.hadoop.hbase.client.Scan.readFields(Scan.java:591)
> > at
> >
> >
> org.apache.hadoop.hbase.io.HbaseObjectWritable.readObject(HbaseObjectWritable.java:689)
> > at org.apache.hadoop.hbase.ipc.Invocation.readFields(Invocation.java:127)
> > at
> >
> >
> org.apache.hadoop.hbase.ipc.HBaseServer$Connection.processData(HBaseServer.java:1313)
> > at
> >
> >
> org.apache.hadoop.hbase.ipc.HBaseServer$Connection.readAndProcess(HBaseServer.java:1228)
> > at
> >
> >
> org.apache.hadoop.hbase.ipc.HBaseServer$Listener.doRead(HBaseServer.java:750)
> > at
> >
> >
> org.apache.hadoop.hbase.ipc.HBaseServer$Listener$Reader.doRunLoop(HBaseServer.java:541)
> > at
> >
> >
> org.apache.hadoop.hbase.ipc.HBaseServer$Listener$Reader.run(HBaseServer.java:516)
> > at
> >
> >
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
> > at
> >
> >
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
> > at java.lang.Thread.run(Thread.java:744)
> >
> > how can i fix this dependency issue.
> >
> >
> >
> >
> > On Fri, Apr 25, 2014 at 9:06 PM, yeshwanth kumar <yeshwanth43@gmail.com
> > >wrote:
> >
> > > hi jean,
> > >
> > > i haven't written any piece of code to workaround znode,
> > > one of my rest endpoint in webapp reads data from hbase.
> > > it is giving me empty set.
> > > all if found in the logs is
> > >
> > > Reading reply sessionid:0x145974472760023, packet:: clientPath:null
> > > serverPath:null finished:false header:: 42,4 replyHeader::
> > > 42,77309411972,-101 request:: '/hbase/table/NCSVs,F response::
> > > hconnection-0x145974472760023 Unable to get data of znode
> > > /hbase/table/NCSVs because node does not exist (not an error)
> > >
> > > this is what i found in zookeeper client
> > >
> > > *$[zk: localhost:2181(CONNECTED) 14] ls /hbase*
> > > *[splitlog, online-snapshot, unassigned, table94, root-region-server,
> rs,
> > > backup-masters, table, draining, master, shutdown, hbaseid]*
> > >
> > >
> > > -yeshwanth
> > >
> > >
> > > On Fri, Apr 25, 2014 at 8:18 PM, Jean-Marc Spaggiari <
> > > jean-marc@spaggiari.org> wrote:
> > >
> > >> Hi Yeshwanth,
> > >>
> > >> What is your webapp looking at the ZNode? If you should the Java
> client
> > >> and
> > >> not look at the ZNode. Not getting why it's looking there. Do yo
> uknow?
> > >>
> > >> JM
> > >>
> > >>
> > >> 2014-04-25 2:01 GMT-04:00 yeshwanth kumar <ye...@gmail.com>:
> > >>
> > >> > hi matteo,
> > >> >
> > >> > my problem isn't solved yet.
> > >> > webapp isn't reading data from hbase.
> > >> > all i see in logs is znode /hbase/table/mytable doesn't exist.
> > >> > but all my tables are present in /hbase/table94/
> > >> >
> > >> > so how can i fix this problem.
> > >> >
> > >> > thanks,
> > >> > yeshwanth
> > >> >
> > >> >
> > >> >
> > >> >
> > >> > On Tue, Apr 22, 2014 at 9:58 PM, Matteo Bertozzi <
> > >> theo.bertozzi@gmail.com
> > >> > >wrote:
> > >> >
> > >> > > that is already done by the server.
> > >> > > The ZooKeeperWatcher.java is using conf.get(
> > >> > > "zookeeper.znode.masterTableEnableDisable", "table94"));
> > >> > >
> > >> > > anyway, why are you looking at the znodes?
> > >> > > a client application should never look at the znodes.
> > >> > > The znodes are only carrying transient informations used for
> > >> coordination
> > >> > >
> > >> > > Matteo
> > >> > >
> > >> > >
> > >> > >
> > >> > > On Tue, Apr 22, 2014 at 9:20 AM, yeshwanth kumar <
> > >> yeshwanth43@gmail.com
> > >> > > >wrote:
> > >> > >
> > >> > > > hi matteo,
> > >> > > >
> > >> > > > how do i specify hbase znode to use /hbase/table94 instead of
> > >> > > /hbase/table
> > >> > > >
> > >> > > > thanks
> > >> > > >
> > >> > > >
> > >> > > > On Tue, Apr 22, 2014 at 9:40 PM, Matteo Bertozzi <
> > >> > > theo.bertozzi@gmail.com
> > >> > > > >wrote:
> > >> > > >
> > >> > > > > On Tue, Apr 22, 2014 at 9:00 AM, yeshwanth kumar <
> > >> > > yeshwanth43@gmail.com
> > >> > > > > >wrote:
> > >> > > > >
> > >> > > > > > @matteo
> > >> > > > > > present znode is at /hbase/table where it is empty.
> > >> > > > > > where as all my tables are present in /hbase/table94
> > >> > > > > > now webapp isn't reading the data from hbase.
> > >> > > > > >
> > >> > > > >
> > >> > > > > cdh 4.5.0 doesn't write in /hbase/table due to a compatibility
> > >> issue
> > >> > > > > /hbase/table94
> > >> > > > > is used.
> > >> > > > > (see HBASE-6710 for details)
> > >> > > > >
> > >> > > > > On Tue, Apr 22, 2014 at 6:56 PM, Matteo Bertozzi <
> > >> > > > theo.bertozzi@gmail.com
> > >> > > > > >wrote:
> > >> > > > >
> > >> > > > > >
> > >> > > > > > > /hbase/table94 is a "compatibility" znode that replaces
> > >> > > /hbase/table
> > >> > > > > > > if you want more details take a look at HBASE-6710.
> > >> > > > > > >
> > >> > > > > > > what is the problem of looking into /hbase/table94 instead
> > of
> > >> > > > > > /hbase/table?
> > >> > > > > > >
> > >> > > > > > > Matteo
> > >> > > > > > >
> > >> > > > > > >
> > >> > > > > > >
> > >> > > > > > > On Tue, Apr 22, 2014 at 5:18 AM, yeshwanth kumar <
> > >> > > > > yeshwanth43@gmail.com
> > >> > > > > > > >wrote:
> > >> > > > > > >
> > >> > > > > > > > Hi,
> > >> > > > > > > >
> > >> > > > > > > >
> > >> > > > > > > > i am running webapp written on jaxrs framework which
> > >> performs
> > >> > > CRUD
> > >> > > > > > > > opereations on hbase.
> > >> > > > > > > >
> > >> > > > > > > > app was working fine till last week,
> > >> > > > > > > > now when i perform reading opeartion from hbase i don't
> > see
> > >> > any
> > >> > > > > data,
> > >> > > > > > i
> > >> > > > > > > > don't see any errors or exceptions but i found this
> lines
> > in
> > >> > the
> > >> > > > log
> > >> > > > > > > >
> > >> > > > > > > > *""Unable to get data of znode /hbase/table/myTable
> > because
> > >> > node
> > >> > > > does
> > >> > > > > > not
> > >> > > > > > > > exist (not an error)"".*
> > >> > > > > > > >
> > >> > > > > > > > i followed this<
> > >> > > > > > > >
> > >> https://blog.cloudera.com/blog/2013/10/what-are-hbase-znodes/>
> > >> > > > > > > > cloudera
> > >> > > > > > > > article about znodes and this is what i found,
> > >> > > > > > > >
> > >> > > > > > > > *$[zk: localhost:2181(CONNECTED) 14] ls /hbase*
> > >> > > > > > > > *[splitlog, online-snapshot, unassigned, table94,
> > >> > > > root-region-server,
> > >> > > > > > rs,
> > >> > > > > > > > backup-masters, table, draining, master, shutdown,
> > hbaseid]*
> > >> > > > > > > >
> > >> > > > > > > > all the tables were present in /hbase/table94, where as
> > >> > > > /hbase/table
> > >> > > > > is
> > >> > > > > > > > empty.
> > >> > > > > > > >
> > >> > > > > > > > i know what is the problem now,
> > >> > > > > > > > but i don't know how to solve it.
> > >> > > > > > > >
> > >> > > > > > > > can someone help me with this issue.
> > >> > > > > > > >
> > >> > > > > > > > Thanks,
> > >> > > > > > > > Yeshwanth
> > >> > > > > > > >
> > >> > > > > > >
> > >> > > > > >
> > >> > > > >
> > >> > > >
> > >> > >
> > >> >
> > >>
> > >
> > >
> >
>
Re: Unable to get data of znode /hbase/table/mytable.
Posted by Ted Yu <yu...@gmail.com>.
Did the exception below happen when you were performing some query on the
region server ?
Can you tell us a bit more whether your query uses FilterList ?
Thanks
On Sun, Apr 27, 2014 at 9:28 AM, yeshwanth kumar <ye...@gmail.com>wrote:
> hi jean,
>
> i am using HBase 0.94.6-cdh4.5.0
>
> i found this in regionservers log,
>
> org.apache.hadoop.hbase.io.HbaseObjectWritable
> Error in readFields
> java.lang.ClassCastException:
> org.apache.hadoop.hbase.snapshot.HSnapshotDescription cannot be cast to
> org.apache.hadoop.hbase.filter.Filter
> at
> org.apache.hadoop.hbase.filter.FilterList.readFields(FilterList.java:276)
> at org.apache.hadoop.hbase.client.Scan.readFields(Scan.java:591)
> at
>
> org.apache.hadoop.hbase.io.HbaseObjectWritable.readObject(HbaseObjectWritable.java:689)
> at org.apache.hadoop.hbase.ipc.Invocation.readFields(Invocation.java:127)
> at
>
> org.apache.hadoop.hbase.ipc.HBaseServer$Connection.processData(HBaseServer.java:1313)
> at
>
> org.apache.hadoop.hbase.ipc.HBaseServer$Connection.readAndProcess(HBaseServer.java:1228)
> at
>
> org.apache.hadoop.hbase.ipc.HBaseServer$Listener.doRead(HBaseServer.java:750)
> at
>
> org.apache.hadoop.hbase.ipc.HBaseServer$Listener$Reader.doRunLoop(HBaseServer.java:541)
> at
>
> org.apache.hadoop.hbase.ipc.HBaseServer$Listener$Reader.run(HBaseServer.java:516)
> at
>
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
> at
>
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
> at java.lang.Thread.run(Thread.java:744)
>
> how can i fix this dependency issue.
>
>
>
>
> On Fri, Apr 25, 2014 at 9:06 PM, yeshwanth kumar <yeshwanth43@gmail.com
> >wrote:
>
> > hi jean,
> >
> > i haven't written any piece of code to workaround znode,
> > one of my rest endpoint in webapp reads data from hbase.
> > it is giving me empty set.
> > all if found in the logs is
> >
> > Reading reply sessionid:0x145974472760023, packet:: clientPath:null
> > serverPath:null finished:false header:: 42,4 replyHeader::
> > 42,77309411972,-101 request:: '/hbase/table/NCSVs,F response::
> > hconnection-0x145974472760023 Unable to get data of znode
> > /hbase/table/NCSVs because node does not exist (not an error)
> >
> > this is what i found in zookeeper client
> >
> > *$[zk: localhost:2181(CONNECTED) 14] ls /hbase*
> > *[splitlog, online-snapshot, unassigned, table94, root-region-server, rs,
> > backup-masters, table, draining, master, shutdown, hbaseid]*
> >
> >
> > -yeshwanth
> >
> >
> > On Fri, Apr 25, 2014 at 8:18 PM, Jean-Marc Spaggiari <
> > jean-marc@spaggiari.org> wrote:
> >
> >> Hi Yeshwanth,
> >>
> >> What is your webapp looking at the ZNode? If you should the Java client
> >> and
> >> not look at the ZNode. Not getting why it's looking there. Do yo uknow?
> >>
> >> JM
> >>
> >>
> >> 2014-04-25 2:01 GMT-04:00 yeshwanth kumar <ye...@gmail.com>:
> >>
> >> > hi matteo,
> >> >
> >> > my problem isn't solved yet.
> >> > webapp isn't reading data from hbase.
> >> > all i see in logs is znode /hbase/table/mytable doesn't exist.
> >> > but all my tables are present in /hbase/table94/
> >> >
> >> > so how can i fix this problem.
> >> >
> >> > thanks,
> >> > yeshwanth
> >> >
> >> >
> >> >
> >> >
> >> > On Tue, Apr 22, 2014 at 9:58 PM, Matteo Bertozzi <
> >> theo.bertozzi@gmail.com
> >> > >wrote:
> >> >
> >> > > that is already done by the server.
> >> > > The ZooKeeperWatcher.java is using conf.get(
> >> > > "zookeeper.znode.masterTableEnableDisable", "table94"));
> >> > >
> >> > > anyway, why are you looking at the znodes?
> >> > > a client application should never look at the znodes.
> >> > > The znodes are only carrying transient informations used for
> >> coordination
> >> > >
> >> > > Matteo
> >> > >
> >> > >
> >> > >
> >> > > On Tue, Apr 22, 2014 at 9:20 AM, yeshwanth kumar <
> >> yeshwanth43@gmail.com
> >> > > >wrote:
> >> > >
> >> > > > hi matteo,
> >> > > >
> >> > > > how do i specify hbase znode to use /hbase/table94 instead of
> >> > > /hbase/table
> >> > > >
> >> > > > thanks
> >> > > >
> >> > > >
> >> > > > On Tue, Apr 22, 2014 at 9:40 PM, Matteo Bertozzi <
> >> > > theo.bertozzi@gmail.com
> >> > > > >wrote:
> >> > > >
> >> > > > > On Tue, Apr 22, 2014 at 9:00 AM, yeshwanth kumar <
> >> > > yeshwanth43@gmail.com
> >> > > > > >wrote:
> >> > > > >
> >> > > > > > @matteo
> >> > > > > > present znode is at /hbase/table where it is empty.
> >> > > > > > where as all my tables are present in /hbase/table94
> >> > > > > > now webapp isn't reading the data from hbase.
> >> > > > > >
> >> > > > >
> >> > > > > cdh 4.5.0 doesn't write in /hbase/table due to a compatibility
> >> issue
> >> > > > > /hbase/table94
> >> > > > > is used.
> >> > > > > (see HBASE-6710 for details)
> >> > > > >
> >> > > > > On Tue, Apr 22, 2014 at 6:56 PM, Matteo Bertozzi <
> >> > > > theo.bertozzi@gmail.com
> >> > > > > >wrote:
> >> > > > >
> >> > > > > >
> >> > > > > > > /hbase/table94 is a "compatibility" znode that replaces
> >> > > /hbase/table
> >> > > > > > > if you want more details take a look at HBASE-6710.
> >> > > > > > >
> >> > > > > > > what is the problem of looking into /hbase/table94 instead
> of
> >> > > > > > /hbase/table?
> >> > > > > > >
> >> > > > > > > Matteo
> >> > > > > > >
> >> > > > > > >
> >> > > > > > >
> >> > > > > > > On Tue, Apr 22, 2014 at 5:18 AM, yeshwanth kumar <
> >> > > > > yeshwanth43@gmail.com
> >> > > > > > > >wrote:
> >> > > > > > >
> >> > > > > > > > Hi,
> >> > > > > > > >
> >> > > > > > > >
> >> > > > > > > > i am running webapp written on jaxrs framework which
> >> performs
> >> > > CRUD
> >> > > > > > > > opereations on hbase.
> >> > > > > > > >
> >> > > > > > > > app was working fine till last week,
> >> > > > > > > > now when i perform reading opeartion from hbase i don't
> see
> >> > any
> >> > > > > data,
> >> > > > > > i
> >> > > > > > > > don't see any errors or exceptions but i found this lines
> in
> >> > the
> >> > > > log
> >> > > > > > > >
> >> > > > > > > > *""Unable to get data of znode /hbase/table/myTable
> because
> >> > node
> >> > > > does
> >> > > > > > not
> >> > > > > > > > exist (not an error)"".*
> >> > > > > > > >
> >> > > > > > > > i followed this<
> >> > > > > > > >
> >> https://blog.cloudera.com/blog/2013/10/what-are-hbase-znodes/>
> >> > > > > > > > cloudera
> >> > > > > > > > article about znodes and this is what i found,
> >> > > > > > > >
> >> > > > > > > > *$[zk: localhost:2181(CONNECTED) 14] ls /hbase*
> >> > > > > > > > *[splitlog, online-snapshot, unassigned, table94,
> >> > > > root-region-server,
> >> > > > > > rs,
> >> > > > > > > > backup-masters, table, draining, master, shutdown,
> hbaseid]*
> >> > > > > > > >
> >> > > > > > > > all the tables were present in /hbase/table94, where as
> >> > > > /hbase/table
> >> > > > > is
> >> > > > > > > > empty.
> >> > > > > > > >
> >> > > > > > > > i know what is the problem now,
> >> > > > > > > > but i don't know how to solve it.
> >> > > > > > > >
> >> > > > > > > > can someone help me with this issue.
> >> > > > > > > >
> >> > > > > > > > Thanks,
> >> > > > > > > > Yeshwanth
> >> > > > > > > >
> >> > > > > > >
> >> > > > > >
> >> > > > >
> >> > > >
> >> > >
> >> >
> >>
> >
> >
>
Re: Unable to get data of znode /hbase/table/mytable.
Posted by yeshwanth kumar <ye...@gmail.com>.
hi jean,
i am using HBase 0.94.6-cdh4.5.0
i found this in regionservers log,
org.apache.hadoop.hbase.io.HbaseObjectWritable
Error in readFields
java.lang.ClassCastException:
org.apache.hadoop.hbase.snapshot.HSnapshotDescription cannot be cast to
org.apache.hadoop.hbase.filter.Filter
at org.apache.hadoop.hbase.filter.FilterList.readFields(FilterList.java:276)
at org.apache.hadoop.hbase.client.Scan.readFields(Scan.java:591)
at
org.apache.hadoop.hbase.io.HbaseObjectWritable.readObject(HbaseObjectWritable.java:689)
at org.apache.hadoop.hbase.ipc.Invocation.readFields(Invocation.java:127)
at
org.apache.hadoop.hbase.ipc.HBaseServer$Connection.processData(HBaseServer.java:1313)
at
org.apache.hadoop.hbase.ipc.HBaseServer$Connection.readAndProcess(HBaseServer.java:1228)
at
org.apache.hadoop.hbase.ipc.HBaseServer$Listener.doRead(HBaseServer.java:750)
at
org.apache.hadoop.hbase.ipc.HBaseServer$Listener$Reader.doRunLoop(HBaseServer.java:541)
at
org.apache.hadoop.hbase.ipc.HBaseServer$Listener$Reader.run(HBaseServer.java:516)
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:744)
how can i fix this dependency issue.
On Fri, Apr 25, 2014 at 9:06 PM, yeshwanth kumar <ye...@gmail.com>wrote:
> hi jean,
>
> i haven't written any piece of code to workaround znode,
> one of my rest endpoint in webapp reads data from hbase.
> it is giving me empty set.
> all if found in the logs is
>
> Reading reply sessionid:0x145974472760023, packet:: clientPath:null
> serverPath:null finished:false header:: 42,4 replyHeader::
> 42,77309411972,-101 request:: '/hbase/table/NCSVs,F response::
> hconnection-0x145974472760023 Unable to get data of znode
> /hbase/table/NCSVs because node does not exist (not an error)
>
> this is what i found in zookeeper client
>
> *$[zk: localhost:2181(CONNECTED) 14] ls /hbase*
> *[splitlog, online-snapshot, unassigned, table94, root-region-server, rs,
> backup-masters, table, draining, master, shutdown, hbaseid]*
>
>
> -yeshwanth
>
>
> On Fri, Apr 25, 2014 at 8:18 PM, Jean-Marc Spaggiari <
> jean-marc@spaggiari.org> wrote:
>
>> Hi Yeshwanth,
>>
>> What is your webapp looking at the ZNode? If you should the Java client
>> and
>> not look at the ZNode. Not getting why it's looking there. Do yo uknow?
>>
>> JM
>>
>>
>> 2014-04-25 2:01 GMT-04:00 yeshwanth kumar <ye...@gmail.com>:
>>
>> > hi matteo,
>> >
>> > my problem isn't solved yet.
>> > webapp isn't reading data from hbase.
>> > all i see in logs is znode /hbase/table/mytable doesn't exist.
>> > but all my tables are present in /hbase/table94/
>> >
>> > so how can i fix this problem.
>> >
>> > thanks,
>> > yeshwanth
>> >
>> >
>> >
>> >
>> > On Tue, Apr 22, 2014 at 9:58 PM, Matteo Bertozzi <
>> theo.bertozzi@gmail.com
>> > >wrote:
>> >
>> > > that is already done by the server.
>> > > The ZooKeeperWatcher.java is using conf.get(
>> > > "zookeeper.znode.masterTableEnableDisable", "table94"));
>> > >
>> > > anyway, why are you looking at the znodes?
>> > > a client application should never look at the znodes.
>> > > The znodes are only carrying transient informations used for
>> coordination
>> > >
>> > > Matteo
>> > >
>> > >
>> > >
>> > > On Tue, Apr 22, 2014 at 9:20 AM, yeshwanth kumar <
>> yeshwanth43@gmail.com
>> > > >wrote:
>> > >
>> > > > hi matteo,
>> > > >
>> > > > how do i specify hbase znode to use /hbase/table94 instead of
>> > > /hbase/table
>> > > >
>> > > > thanks
>> > > >
>> > > >
>> > > > On Tue, Apr 22, 2014 at 9:40 PM, Matteo Bertozzi <
>> > > theo.bertozzi@gmail.com
>> > > > >wrote:
>> > > >
>> > > > > On Tue, Apr 22, 2014 at 9:00 AM, yeshwanth kumar <
>> > > yeshwanth43@gmail.com
>> > > > > >wrote:
>> > > > >
>> > > > > > @matteo
>> > > > > > present znode is at /hbase/table where it is empty.
>> > > > > > where as all my tables are present in /hbase/table94
>> > > > > > now webapp isn't reading the data from hbase.
>> > > > > >
>> > > > >
>> > > > > cdh 4.5.0 doesn't write in /hbase/table due to a compatibility
>> issue
>> > > > > /hbase/table94
>> > > > > is used.
>> > > > > (see HBASE-6710 for details)
>> > > > >
>> > > > > On Tue, Apr 22, 2014 at 6:56 PM, Matteo Bertozzi <
>> > > > theo.bertozzi@gmail.com
>> > > > > >wrote:
>> > > > >
>> > > > > >
>> > > > > > > /hbase/table94 is a "compatibility" znode that replaces
>> > > /hbase/table
>> > > > > > > if you want more details take a look at HBASE-6710.
>> > > > > > >
>> > > > > > > what is the problem of looking into /hbase/table94 instead of
>> > > > > > /hbase/table?
>> > > > > > >
>> > > > > > > Matteo
>> > > > > > >
>> > > > > > >
>> > > > > > >
>> > > > > > > On Tue, Apr 22, 2014 at 5:18 AM, yeshwanth kumar <
>> > > > > yeshwanth43@gmail.com
>> > > > > > > >wrote:
>> > > > > > >
>> > > > > > > > Hi,
>> > > > > > > >
>> > > > > > > >
>> > > > > > > > i am running webapp written on jaxrs framework which
>> performs
>> > > CRUD
>> > > > > > > > opereations on hbase.
>> > > > > > > >
>> > > > > > > > app was working fine till last week,
>> > > > > > > > now when i perform reading opeartion from hbase i don't see
>> > any
>> > > > > data,
>> > > > > > i
>> > > > > > > > don't see any errors or exceptions but i found this lines in
>> > the
>> > > > log
>> > > > > > > >
>> > > > > > > > *""Unable to get data of znode /hbase/table/myTable because
>> > node
>> > > > does
>> > > > > > not
>> > > > > > > > exist (not an error)"".*
>> > > > > > > >
>> > > > > > > > i followed this<
>> > > > > > > >
>> https://blog.cloudera.com/blog/2013/10/what-are-hbase-znodes/>
>> > > > > > > > cloudera
>> > > > > > > > article about znodes and this is what i found,
>> > > > > > > >
>> > > > > > > > *$[zk: localhost:2181(CONNECTED) 14] ls /hbase*
>> > > > > > > > *[splitlog, online-snapshot, unassigned, table94,
>> > > > root-region-server,
>> > > > > > rs,
>> > > > > > > > backup-masters, table, draining, master, shutdown, hbaseid]*
>> > > > > > > >
>> > > > > > > > all the tables were present in /hbase/table94, where as
>> > > > /hbase/table
>> > > > > is
>> > > > > > > > empty.
>> > > > > > > >
>> > > > > > > > i know what is the problem now,
>> > > > > > > > but i don't know how to solve it.
>> > > > > > > >
>> > > > > > > > can someone help me with this issue.
>> > > > > > > >
>> > > > > > > > Thanks,
>> > > > > > > > Yeshwanth
>> > > > > > > >
>> > > > > > >
>> > > > > >
>> > > > >
>> > > >
>> > >
>> >
>>
>
>
Re: Unable to get data of znode /hbase/table/mytable.
Posted by yeshwanth kumar <ye...@gmail.com>.
hi jean,
i haven't written any piece of code to workaround znode,
one of my rest endpoint in webapp reads data from hbase.
it is giving me empty set.
all if found in the logs is
Reading reply sessionid:0x145974472760023, packet:: clientPath:null
serverPath:null finished:false header:: 42,4 replyHeader::
42,77309411972,-101 request:: '/hbase/table/NCSVs,F response::
hconnection-0x145974472760023 Unable to get data of znode
/hbase/table/NCSVs because node does not exist (not an error)
this is what i found in zookeeper client
*$[zk: localhost:2181(CONNECTED) 14] ls /hbase*
*[splitlog, online-snapshot, unassigned, table94, root-region-server, rs,
backup-masters, table, draining, master, shutdown, hbaseid]*
-yeshwanth
On Fri, Apr 25, 2014 at 8:18 PM, Jean-Marc Spaggiari <
jean-marc@spaggiari.org> wrote:
> Hi Yeshwanth,
>
> What is your webapp looking at the ZNode? If you should the Java client and
> not look at the ZNode. Not getting why it's looking there. Do yo uknow?
>
> JM
>
>
> 2014-04-25 2:01 GMT-04:00 yeshwanth kumar <ye...@gmail.com>:
>
> > hi matteo,
> >
> > my problem isn't solved yet.
> > webapp isn't reading data from hbase.
> > all i see in logs is znode /hbase/table/mytable doesn't exist.
> > but all my tables are present in /hbase/table94/
> >
> > so how can i fix this problem.
> >
> > thanks,
> > yeshwanth
> >
> >
> >
> >
> > On Tue, Apr 22, 2014 at 9:58 PM, Matteo Bertozzi <
> theo.bertozzi@gmail.com
> > >wrote:
> >
> > > that is already done by the server.
> > > The ZooKeeperWatcher.java is using conf.get(
> > > "zookeeper.znode.masterTableEnableDisable", "table94"));
> > >
> > > anyway, why are you looking at the znodes?
> > > a client application should never look at the znodes.
> > > The znodes are only carrying transient informations used for
> coordination
> > >
> > > Matteo
> > >
> > >
> > >
> > > On Tue, Apr 22, 2014 at 9:20 AM, yeshwanth kumar <
> yeshwanth43@gmail.com
> > > >wrote:
> > >
> > > > hi matteo,
> > > >
> > > > how do i specify hbase znode to use /hbase/table94 instead of
> > > /hbase/table
> > > >
> > > > thanks
> > > >
> > > >
> > > > On Tue, Apr 22, 2014 at 9:40 PM, Matteo Bertozzi <
> > > theo.bertozzi@gmail.com
> > > > >wrote:
> > > >
> > > > > On Tue, Apr 22, 2014 at 9:00 AM, yeshwanth kumar <
> > > yeshwanth43@gmail.com
> > > > > >wrote:
> > > > >
> > > > > > @matteo
> > > > > > present znode is at /hbase/table where it is empty.
> > > > > > where as all my tables are present in /hbase/table94
> > > > > > now webapp isn't reading the data from hbase.
> > > > > >
> > > > >
> > > > > cdh 4.5.0 doesn't write in /hbase/table due to a compatibility
> issue
> > > > > /hbase/table94
> > > > > is used.
> > > > > (see HBASE-6710 for details)
> > > > >
> > > > > On Tue, Apr 22, 2014 at 6:56 PM, Matteo Bertozzi <
> > > > theo.bertozzi@gmail.com
> > > > > >wrote:
> > > > >
> > > > > >
> > > > > > > /hbase/table94 is a "compatibility" znode that replaces
> > > /hbase/table
> > > > > > > if you want more details take a look at HBASE-6710.
> > > > > > >
> > > > > > > what is the problem of looking into /hbase/table94 instead of
> > > > > > /hbase/table?
> > > > > > >
> > > > > > > Matteo
> > > > > > >
> > > > > > >
> > > > > > >
> > > > > > > On Tue, Apr 22, 2014 at 5:18 AM, yeshwanth kumar <
> > > > > yeshwanth43@gmail.com
> > > > > > > >wrote:
> > > > > > >
> > > > > > > > Hi,
> > > > > > > >
> > > > > > > >
> > > > > > > > i am running webapp written on jaxrs framework which performs
> > > CRUD
> > > > > > > > opereations on hbase.
> > > > > > > >
> > > > > > > > app was working fine till last week,
> > > > > > > > now when i perform reading opeartion from hbase i don't see
> > any
> > > > > data,
> > > > > > i
> > > > > > > > don't see any errors or exceptions but i found this lines in
> > the
> > > > log
> > > > > > > >
> > > > > > > > *""Unable to get data of znode /hbase/table/myTable because
> > node
> > > > does
> > > > > > not
> > > > > > > > exist (not an error)"".*
> > > > > > > >
> > > > > > > > i followed this<
> > > > > > > >
> https://blog.cloudera.com/blog/2013/10/what-are-hbase-znodes/>
> > > > > > > > cloudera
> > > > > > > > article about znodes and this is what i found,
> > > > > > > >
> > > > > > > > *$[zk: localhost:2181(CONNECTED) 14] ls /hbase*
> > > > > > > > *[splitlog, online-snapshot, unassigned, table94,
> > > > root-region-server,
> > > > > > rs,
> > > > > > > > backup-masters, table, draining, master, shutdown, hbaseid]*
> > > > > > > >
> > > > > > > > all the tables were present in /hbase/table94, where as
> > > > /hbase/table
> > > > > is
> > > > > > > > empty.
> > > > > > > >
> > > > > > > > i know what is the problem now,
> > > > > > > > but i don't know how to solve it.
> > > > > > > >
> > > > > > > > can someone help me with this issue.
> > > > > > > >
> > > > > > > > Thanks,
> > > > > > > > Yeshwanth
> > > > > > > >
> > > > > > >
> > > > > >
> > > > >
> > > >
> > >
> >
>
Re: Unable to get data of znode /hbase/table/mytable.
Posted by Jean-Marc Spaggiari <je...@spaggiari.org>.
Hi Yeshwanth,
What is your webapp looking at the ZNode? If you should the Java client and
not look at the ZNode. Not getting why it's looking there. Do yo uknow?
JM
2014-04-25 2:01 GMT-04:00 yeshwanth kumar <ye...@gmail.com>:
> hi matteo,
>
> my problem isn't solved yet.
> webapp isn't reading data from hbase.
> all i see in logs is znode /hbase/table/mytable doesn't exist.
> but all my tables are present in /hbase/table94/
>
> so how can i fix this problem.
>
> thanks,
> yeshwanth
>
>
>
>
> On Tue, Apr 22, 2014 at 9:58 PM, Matteo Bertozzi <theo.bertozzi@gmail.com
> >wrote:
>
> > that is already done by the server.
> > The ZooKeeperWatcher.java is using conf.get(
> > "zookeeper.znode.masterTableEnableDisable", "table94"));
> >
> > anyway, why are you looking at the znodes?
> > a client application should never look at the znodes.
> > The znodes are only carrying transient informations used for coordination
> >
> > Matteo
> >
> >
> >
> > On Tue, Apr 22, 2014 at 9:20 AM, yeshwanth kumar <yeshwanth43@gmail.com
> > >wrote:
> >
> > > hi matteo,
> > >
> > > how do i specify hbase znode to use /hbase/table94 instead of
> > /hbase/table
> > >
> > > thanks
> > >
> > >
> > > On Tue, Apr 22, 2014 at 9:40 PM, Matteo Bertozzi <
> > theo.bertozzi@gmail.com
> > > >wrote:
> > >
> > > > On Tue, Apr 22, 2014 at 9:00 AM, yeshwanth kumar <
> > yeshwanth43@gmail.com
> > > > >wrote:
> > > >
> > > > > @matteo
> > > > > present znode is at /hbase/table where it is empty.
> > > > > where as all my tables are present in /hbase/table94
> > > > > now webapp isn't reading the data from hbase.
> > > > >
> > > >
> > > > cdh 4.5.0 doesn't write in /hbase/table due to a compatibility issue
> > > > /hbase/table94
> > > > is used.
> > > > (see HBASE-6710 for details)
> > > >
> > > > On Tue, Apr 22, 2014 at 6:56 PM, Matteo Bertozzi <
> > > theo.bertozzi@gmail.com
> > > > >wrote:
> > > >
> > > > >
> > > > > > /hbase/table94 is a "compatibility" znode that replaces
> > /hbase/table
> > > > > > if you want more details take a look at HBASE-6710.
> > > > > >
> > > > > > what is the problem of looking into /hbase/table94 instead of
> > > > > /hbase/table?
> > > > > >
> > > > > > Matteo
> > > > > >
> > > > > >
> > > > > >
> > > > > > On Tue, Apr 22, 2014 at 5:18 AM, yeshwanth kumar <
> > > > yeshwanth43@gmail.com
> > > > > > >wrote:
> > > > > >
> > > > > > > Hi,
> > > > > > >
> > > > > > >
> > > > > > > i am running webapp written on jaxrs framework which performs
> > CRUD
> > > > > > > opereations on hbase.
> > > > > > >
> > > > > > > app was working fine till last week,
> > > > > > > now when i perform reading opeartion from hbase i don't see
> any
> > > > data,
> > > > > i
> > > > > > > don't see any errors or exceptions but i found this lines in
> the
> > > log
> > > > > > >
> > > > > > > *""Unable to get data of znode /hbase/table/myTable because
> node
> > > does
> > > > > not
> > > > > > > exist (not an error)"".*
> > > > > > >
> > > > > > > i followed this<
> > > > > > > https://blog.cloudera.com/blog/2013/10/what-are-hbase-znodes/>
> > > > > > > cloudera
> > > > > > > article about znodes and this is what i found,
> > > > > > >
> > > > > > > *$[zk: localhost:2181(CONNECTED) 14] ls /hbase*
> > > > > > > *[splitlog, online-snapshot, unassigned, table94,
> > > root-region-server,
> > > > > rs,
> > > > > > > backup-masters, table, draining, master, shutdown, hbaseid]*
> > > > > > >
> > > > > > > all the tables were present in /hbase/table94, where as
> > > /hbase/table
> > > > is
> > > > > > > empty.
> > > > > > >
> > > > > > > i know what is the problem now,
> > > > > > > but i don't know how to solve it.
> > > > > > >
> > > > > > > can someone help me with this issue.
> > > > > > >
> > > > > > > Thanks,
> > > > > > > Yeshwanth
> > > > > > >
> > > > > >
> > > > >
> > > >
> > >
> >
>
Re: Unable to get data of znode /hbase/table/mytable.
Posted by yeshwanth kumar <ye...@gmail.com>.
hi matteo,
my problem isn't solved yet.
webapp isn't reading data from hbase.
all i see in logs is znode /hbase/table/mytable doesn't exist.
but all my tables are present in /hbase/table94/
so how can i fix this problem.
thanks,
yeshwanth
On Tue, Apr 22, 2014 at 9:58 PM, Matteo Bertozzi <th...@gmail.com>wrote:
> that is already done by the server.
> The ZooKeeperWatcher.java is using conf.get(
> "zookeeper.znode.masterTableEnableDisable", "table94"));
>
> anyway, why are you looking at the znodes?
> a client application should never look at the znodes.
> The znodes are only carrying transient informations used for coordination
>
> Matteo
>
>
>
> On Tue, Apr 22, 2014 at 9:20 AM, yeshwanth kumar <yeshwanth43@gmail.com
> >wrote:
>
> > hi matteo,
> >
> > how do i specify hbase znode to use /hbase/table94 instead of
> /hbase/table
> >
> > thanks
> >
> >
> > On Tue, Apr 22, 2014 at 9:40 PM, Matteo Bertozzi <
> theo.bertozzi@gmail.com
> > >wrote:
> >
> > > On Tue, Apr 22, 2014 at 9:00 AM, yeshwanth kumar <
> yeshwanth43@gmail.com
> > > >wrote:
> > >
> > > > @matteo
> > > > present znode is at /hbase/table where it is empty.
> > > > where as all my tables are present in /hbase/table94
> > > > now webapp isn't reading the data from hbase.
> > > >
> > >
> > > cdh 4.5.0 doesn't write in /hbase/table due to a compatibility issue
> > > /hbase/table94
> > > is used.
> > > (see HBASE-6710 for details)
> > >
> > > On Tue, Apr 22, 2014 at 6:56 PM, Matteo Bertozzi <
> > theo.bertozzi@gmail.com
> > > >wrote:
> > >
> > > >
> > > > > /hbase/table94 is a "compatibility" znode that replaces
> /hbase/table
> > > > > if you want more details take a look at HBASE-6710.
> > > > >
> > > > > what is the problem of looking into /hbase/table94 instead of
> > > > /hbase/table?
> > > > >
> > > > > Matteo
> > > > >
> > > > >
> > > > >
> > > > > On Tue, Apr 22, 2014 at 5:18 AM, yeshwanth kumar <
> > > yeshwanth43@gmail.com
> > > > > >wrote:
> > > > >
> > > > > > Hi,
> > > > > >
> > > > > >
> > > > > > i am running webapp written on jaxrs framework which performs
> CRUD
> > > > > > opereations on hbase.
> > > > > >
> > > > > > app was working fine till last week,
> > > > > > now when i perform reading opeartion from hbase i don't see any
> > > data,
> > > > i
> > > > > > don't see any errors or exceptions but i found this lines in the
> > log
> > > > > >
> > > > > > *""Unable to get data of znode /hbase/table/myTable because node
> > does
> > > > not
> > > > > > exist (not an error)"".*
> > > > > >
> > > > > > i followed this<
> > > > > > https://blog.cloudera.com/blog/2013/10/what-are-hbase-znodes/>
> > > > > > cloudera
> > > > > > article about znodes and this is what i found,
> > > > > >
> > > > > > *$[zk: localhost:2181(CONNECTED) 14] ls /hbase*
> > > > > > *[splitlog, online-snapshot, unassigned, table94,
> > root-region-server,
> > > > rs,
> > > > > > backup-masters, table, draining, master, shutdown, hbaseid]*
> > > > > >
> > > > > > all the tables were present in /hbase/table94, where as
> > /hbase/table
> > > is
> > > > > > empty.
> > > > > >
> > > > > > i know what is the problem now,
> > > > > > but i don't know how to solve it.
> > > > > >
> > > > > > can someone help me with this issue.
> > > > > >
> > > > > > Thanks,
> > > > > > Yeshwanth
> > > > > >
> > > > >
> > > >
> > >
> >
>
Re: Unable to get data of znode /hbase/table/mytable.
Posted by Matteo Bertozzi <th...@gmail.com>.
that is already done by the server.
The ZooKeeperWatcher.java is using conf.get(
"zookeeper.znode.masterTableEnableDisable", "table94"));
anyway, why are you looking at the znodes?
a client application should never look at the znodes.
The znodes are only carrying transient informations used for coordination
Matteo
On Tue, Apr 22, 2014 at 9:20 AM, yeshwanth kumar <ye...@gmail.com>wrote:
> hi matteo,
>
> how do i specify hbase znode to use /hbase/table94 instead of /hbase/table
>
> thanks
>
>
> On Tue, Apr 22, 2014 at 9:40 PM, Matteo Bertozzi <theo.bertozzi@gmail.com
> >wrote:
>
> > On Tue, Apr 22, 2014 at 9:00 AM, yeshwanth kumar <yeshwanth43@gmail.com
> > >wrote:
> >
> > > @matteo
> > > present znode is at /hbase/table where it is empty.
> > > where as all my tables are present in /hbase/table94
> > > now webapp isn't reading the data from hbase.
> > >
> >
> > cdh 4.5.0 doesn't write in /hbase/table due to a compatibility issue
> > /hbase/table94
> > is used.
> > (see HBASE-6710 for details)
> >
> > On Tue, Apr 22, 2014 at 6:56 PM, Matteo Bertozzi <
> theo.bertozzi@gmail.com
> > >wrote:
> >
> > >
> > > > /hbase/table94 is a "compatibility" znode that replaces /hbase/table
> > > > if you want more details take a look at HBASE-6710.
> > > >
> > > > what is the problem of looking into /hbase/table94 instead of
> > > /hbase/table?
> > > >
> > > > Matteo
> > > >
> > > >
> > > >
> > > > On Tue, Apr 22, 2014 at 5:18 AM, yeshwanth kumar <
> > yeshwanth43@gmail.com
> > > > >wrote:
> > > >
> > > > > Hi,
> > > > >
> > > > >
> > > > > i am running webapp written on jaxrs framework which performs CRUD
> > > > > opereations on hbase.
> > > > >
> > > > > app was working fine till last week,
> > > > > now when i perform reading opeartion from hbase i don't see any
> > data,
> > > i
> > > > > don't see any errors or exceptions but i found this lines in the
> log
> > > > >
> > > > > *""Unable to get data of znode /hbase/table/myTable because node
> does
> > > not
> > > > > exist (not an error)"".*
> > > > >
> > > > > i followed this<
> > > > > https://blog.cloudera.com/blog/2013/10/what-are-hbase-znodes/>
> > > > > cloudera
> > > > > article about znodes and this is what i found,
> > > > >
> > > > > *$[zk: localhost:2181(CONNECTED) 14] ls /hbase*
> > > > > *[splitlog, online-snapshot, unassigned, table94,
> root-region-server,
> > > rs,
> > > > > backup-masters, table, draining, master, shutdown, hbaseid]*
> > > > >
> > > > > all the tables were present in /hbase/table94, where as
> /hbase/table
> > is
> > > > > empty.
> > > > >
> > > > > i know what is the problem now,
> > > > > but i don't know how to solve it.
> > > > >
> > > > > can someone help me with this issue.
> > > > >
> > > > > Thanks,
> > > > > Yeshwanth
> > > > >
> > > >
> > >
> >
>
Re: Unable to get data of znode /hbase/table/mytable.
Posted by yeshwanth kumar <ye...@gmail.com>.
hi matteo,
how do i specify hbase znode to use /hbase/table94 instead of /hbase/table
thanks
On Tue, Apr 22, 2014 at 9:40 PM, Matteo Bertozzi <th...@gmail.com>wrote:
> On Tue, Apr 22, 2014 at 9:00 AM, yeshwanth kumar <yeshwanth43@gmail.com
> >wrote:
>
> > @matteo
> > present znode is at /hbase/table where it is empty.
> > where as all my tables are present in /hbase/table94
> > now webapp isn't reading the data from hbase.
> >
>
> cdh 4.5.0 doesn't write in /hbase/table due to a compatibility issue
> /hbase/table94
> is used.
> (see HBASE-6710 for details)
>
> On Tue, Apr 22, 2014 at 6:56 PM, Matteo Bertozzi <theo.bertozzi@gmail.com
> >wrote:
>
> >
> > > /hbase/table94 is a "compatibility" znode that replaces /hbase/table
> > > if you want more details take a look at HBASE-6710.
> > >
> > > what is the problem of looking into /hbase/table94 instead of
> > /hbase/table?
> > >
> > > Matteo
> > >
> > >
> > >
> > > On Tue, Apr 22, 2014 at 5:18 AM, yeshwanth kumar <
> yeshwanth43@gmail.com
> > > >wrote:
> > >
> > > > Hi,
> > > >
> > > >
> > > > i am running webapp written on jaxrs framework which performs CRUD
> > > > opereations on hbase.
> > > >
> > > > app was working fine till last week,
> > > > now when i perform reading opeartion from hbase i don't see any
> data,
> > i
> > > > don't see any errors or exceptions but i found this lines in the log
> > > >
> > > > *""Unable to get data of znode /hbase/table/myTable because node does
> > not
> > > > exist (not an error)"".*
> > > >
> > > > i followed this<
> > > > https://blog.cloudera.com/blog/2013/10/what-are-hbase-znodes/>
> > > > cloudera
> > > > article about znodes and this is what i found,
> > > >
> > > > *$[zk: localhost:2181(CONNECTED) 14] ls /hbase*
> > > > *[splitlog, online-snapshot, unassigned, table94, root-region-server,
> > rs,
> > > > backup-masters, table, draining, master, shutdown, hbaseid]*
> > > >
> > > > all the tables were present in /hbase/table94, where as /hbase/table
> is
> > > > empty.
> > > >
> > > > i know what is the problem now,
> > > > but i don't know how to solve it.
> > > >
> > > > can someone help me with this issue.
> > > >
> > > > Thanks,
> > > > Yeshwanth
> > > >
> > >
> >
>
Re: Unable to get data of znode /hbase/table/mytable.
Posted by Matteo Bertozzi <th...@gmail.com>.
On Tue, Apr 22, 2014 at 9:00 AM, yeshwanth kumar <ye...@gmail.com>wrote:
> @matteo
> present znode is at /hbase/table where it is empty.
> where as all my tables are present in /hbase/table94
> now webapp isn't reading the data from hbase.
>
cdh 4.5.0 doesn't write in /hbase/table due to a compatibility issue
/hbase/table94
is used.
(see HBASE-6710 for details)
On Tue, Apr 22, 2014 at 6:56 PM, Matteo Bertozzi <theo.bertozzi@gmail.com
>wrote:
>
> > /hbase/table94 is a "compatibility" znode that replaces /hbase/table
> > if you want more details take a look at HBASE-6710.
> >
> > what is the problem of looking into /hbase/table94 instead of
> /hbase/table?
> >
> > Matteo
> >
> >
> >
> > On Tue, Apr 22, 2014 at 5:18 AM, yeshwanth kumar <yeshwanth43@gmail.com
> > >wrote:
> >
> > > Hi,
> > >
> > >
> > > i am running webapp written on jaxrs framework which performs CRUD
> > > opereations on hbase.
> > >
> > > app was working fine till last week,
> > > now when i perform reading opeartion from hbase i don't see any data,
> i
> > > don't see any errors or exceptions but i found this lines in the log
> > >
> > > *""Unable to get data of znode /hbase/table/myTable because node does
> not
> > > exist (not an error)"".*
> > >
> > > i followed this<
> > > https://blog.cloudera.com/blog/2013/10/what-are-hbase-znodes/>
> > > cloudera
> > > article about znodes and this is what i found,
> > >
> > > *$[zk: localhost:2181(CONNECTED) 14] ls /hbase*
> > > *[splitlog, online-snapshot, unassigned, table94, root-region-server,
> rs,
> > > backup-masters, table, draining, master, shutdown, hbaseid]*
> > >
> > > all the tables were present in /hbase/table94, where as /hbase/table is
> > > empty.
> > >
> > > i know what is the problem now,
> > > but i don't know how to solve it.
> > >
> > > can someone help me with this issue.
> > >
> > > Thanks,
> > > Yeshwanth
> > >
> >
>
Re: Unable to get data of znode /hbase/table/mytable.
Posted by yeshwanth kumar <ye...@gmail.com>.
hi jean,
i am running HBase 0.94.6-cdh4.5.0
and zookeeper.znode.parent value is set /hbase
@matteo
present znode is at /hbase/table where it is empty.
where as all my tables are present in /hbase/table94
now webapp isn't reading the data from hbase.
On Tue, Apr 22, 2014 at 6:56 PM, Matteo Bertozzi <th...@gmail.com>wrote:
> /hbase/table94 is a "compatibility" znode that replaces /hbase/table
> if you want more details take a look at HBASE-6710.
>
> what is the problem of looking into /hbase/table94 instead of /hbase/table?
>
> Matteo
>
>
>
> On Tue, Apr 22, 2014 at 5:18 AM, yeshwanth kumar <yeshwanth43@gmail.com
> >wrote:
>
> > Hi,
> >
> >
> > i am running webapp written on jaxrs framework which performs CRUD
> > opereations on hbase.
> >
> > app was working fine till last week,
> > now when i perform reading opeartion from hbase i don't see any data, i
> > don't see any errors or exceptions but i found this lines in the log
> >
> > *""Unable to get data of znode /hbase/table/myTable because node does not
> > exist (not an error)"".*
> >
> > i followed this<
> > https://blog.cloudera.com/blog/2013/10/what-are-hbase-znodes/>
> > cloudera
> > article about znodes and this is what i found,
> >
> > *$[zk: localhost:2181(CONNECTED) 14] ls /hbase*
> > *[splitlog, online-snapshot, unassigned, table94, root-region-server, rs,
> > backup-masters, table, draining, master, shutdown, hbaseid]*
> >
> > all the tables were present in /hbase/table94, where as /hbase/table is
> > empty.
> >
> > i know what is the problem now,
> > but i don't know how to solve it.
> >
> > can someone help me with this issue.
> >
> > Thanks,
> > Yeshwanth
> >
>
Re: Unable to get data of znode /hbase/table/mytable.
Posted by Matteo Bertozzi <th...@gmail.com>.
/hbase/table94 is a "compatibility" znode that replaces /hbase/table
if you want more details take a look at HBASE-6710.
what is the problem of looking into /hbase/table94 instead of /hbase/table?
Matteo
On Tue, Apr 22, 2014 at 5:18 AM, yeshwanth kumar <ye...@gmail.com>wrote:
> Hi,
>
>
> i am running webapp written on jaxrs framework which performs CRUD
> opereations on hbase.
>
> app was working fine till last week,
> now when i perform reading opeartion from hbase i don't see any data, i
> don't see any errors or exceptions but i found this lines in the log
>
> *""Unable to get data of znode /hbase/table/myTable because node does not
> exist (not an error)"".*
>
> i followed this<
> https://blog.cloudera.com/blog/2013/10/what-are-hbase-znodes/>
> cloudera
> article about znodes and this is what i found,
>
> *$[zk: localhost:2181(CONNECTED) 14] ls /hbase*
> *[splitlog, online-snapshot, unassigned, table94, root-region-server, rs,
> backup-masters, table, draining, master, shutdown, hbaseid]*
>
> all the tables were present in /hbase/table94, where as /hbase/table is
> empty.
>
> i know what is the problem now,
> but i don't know how to solve it.
>
> can someone help me with this issue.
>
> Thanks,
> Yeshwanth
>
Re: Unable to get data of znode /hbase/table/mytable.
Posted by Jean-Marc Spaggiari <je...@spaggiari.org>.
Hi Yeshwanth,
Which HBase version are you using? What do you have in your HBase config
file for the znode values?
JM
2014-04-22 8:18 GMT-04:00 yeshwanth kumar <ye...@gmail.com>:
> Hi,
>
>
> i am running webapp written on jaxrs framework which performs CRUD
> opereations on hbase.
>
> app was working fine till last week,
> now when i perform reading opeartion from hbase i don't see any data, i
> don't see any errors or exceptions but i found this lines in the log
>
> *""Unable to get data of znode /hbase/table/myTable because node does not
> exist (not an error)"".*
>
> i followed this<
> https://blog.cloudera.com/blog/2013/10/what-are-hbase-znodes/>
> cloudera
> article about znodes and this is what i found,
>
> *$[zk: localhost:2181(CONNECTED) 14] ls /hbase*
> *[splitlog, online-snapshot, unassigned, table94, root-region-server, rs,
> backup-masters, table, draining, master, shutdown, hbaseid]*
>
> all the tables were present in /hbase/table94, where as /hbase/table is
> empty.
>
> i know what is the problem now,
> but i don't know how to solve it.
>
> can someone help me with this issue.
>
> Thanks,
> Yeshwanth
>