How many columns in your column family? St.Ack On Mon, Jun 29, 2009 at 3:10 PM, llpind <[email protected]> wrote:
> > I got the same exception when I increased to 120000. > > If I simiply remove addColumn, and do an addFamily, it works fine (just > takes long time, since I have lots of records I'm looping over). Anyone > know what the problem is? > > I was trying to increase perfromance by adding the type as a column family > therefore allowing me to filter beforehand. > > Thanks. > > > stack-3 wrote: > > > > So, you are spending > 60 seconds in the client before going back to the > > regionserver? If so, can you change this? Or up the lease period on > > scanners > 60 seconds. > > St.Ack > > > > On Mon, Jun 29, 2009 at 1:26 PM, llpind <[email protected]> wrote: > > > >> > >> Both are defaults (60 second lease period, and 1 scanner caching). Yeah > >> it > >> is taking longer than 60 seconds. > >> > >> > >> > >> stack-3 wrote: > >> > > >> > Try upping timeout on scanners? > >> > > >> > Is your scanner spending longer than hbase.regionserver.lease.period > -- > >> 60 > >> > seconds -- in map before it goes back to the server? > >> > > >> > What do you have for this value: hbase.client.scanner.caching? > >> > > >> > Is it 1 or something else? If > 1, then you'll be in client while N > >> are > >> > processed; there'll be no trip back to server to renew server-side > >> lease. > >> > > >> > St.Ack > >> > > >> > On Fri, Jun 26, 2009 at 2:49 PM, llpind <[email protected]> > wrote: > >> > > >> >> > >> >> Tried it like this: > >> >> > >> >> Scan linkScan = new Scan (Bytes.toBytes(e + "|"), Bytes.toBytes(e + > >> >> "|A")); > >> >> linkScan.addColumn(Bytes.toBytes("type"), > >> >> Bytes.toBytes("ELECTRONICS")); > >> >> ResultScanner scanner = tblEntity.getScanner(linkScan); > >> >> > >> >> for (Result linkRowResult : scanner ) { > >> >> String row = Bytes.toString(linkRowResult.getRow()); > >> >> } > >> >> > >> >> > >> >> Same exception. I would like to mentioned there is an outter loop > >> around > >> >> the block of code above changing variable 'e' to something else. > >> Also, > >> >> I > >> >> checked the type:ELECTRONICS column, and it isn't that sparse. As > you > >> >> can > >> >> imagine an electronics department has a lot of items in it (in > >> relation > >> >> to > >> >> other departments), but a given item (row. e.g. Samsung blah) is > >> sparse. > >> >> Meaning given all the filters it may be sparse dataset. If it's > >> becuase > >> >> its > >> >> sparse, why would it work when i dont use addColumn, but use > addFamily > >> >> instead? > >> >> > >> >> > >> >> > >> >> > >> >> Ryan Rawson wrote: > >> >> > > >> >> > Can you try with the constructor: > >> >> > Scan scanSpec = new Scan(startRow, stopRow); > >> >> > > >> >> > thanks, > >> >> > -ryan > >> >> > > >> >> > On Fri, Jun 26, 2009 at 2:18 PM, llpind<[email protected]> > >> wrote: > >> >> >> > >> >> >> It works find in shell when I do: > >> >> >> > >> >> >> scan 'tblStore', {COLUMNS =>'type:ELECTRONICS', STARTROW => > >> >> 'TYPE1|TV|', > >> >> >> STOPROW => 'TYPE1|TV|A'} > >> >> >> > >> >> >> Am I doing something wrong in the API call? > >> >> >> > >> >> >> > >> >> >> > >> >> >> llpind wrote: > >> >> >>> > >> >> >>> Yeah I do have a type:ELECTRONIC column. I have a lot of data in > >> the > >> >> >>> tall > >> >> >>> table, so it may be sparse. I'm giving it filters like > >> start/stop > >> >> row > >> >> >>> key and column family/qualifier. This should still work IMO. > >> What > >> >> >>> other > >> >> >>> could be causing this? > >> >> >>> > >> >> >>> > >> >> >>> Ryan Rawson wrote: > >> >> >>>> > >> >> >>>> are you sure you have that column in your data? If you are > >> >> searching > >> >> >>>> for a column that doesnt exist or is very very very sparse, the > >> >> >>>> scanner will spend a lot of time searching only to find nothing, > >> >> thus > >> >> >>>> ending up with these kinds of exceptions.... > >> >> >>>> > >> >> >>>> On Fri, Jun 26, 2009 at 12:35 PM, llpind<[email protected] > > > >> >> wrote: > >> >> >>>>> > >> >> >>>>> This exception does not happen if I remove the addColumn, and > >> leave > >> >> >>>>> only > >> >> >>>>> addFamily (linkScan.addFamily(Bytes.toBytes("type")) . > >> >> >>>>> > >> >> >>>>> also, forgot I also have start and stop rows set: > >> >> >>>>> > >> >> >>>>> > >> >> >>>>> > >> >> >>>>> Scan linkScan = new Scan();. > >> >> >>>>> linkScan.addColumn(Bytes.toBytes("type"), > >> >> >>>>> Bytes.toBytes("ELECTRONICS")); > >> >> >>>>> linkScan.setStartRow (Bytes.toBytes(e + "|")); > >> >> >>>>> linkScan.setStopRow (Bytes.toBytes(e + " ")); > >> >> >>>>> ResultScanner scanner = tblEntity.getScanner(linkScan); > >> >> >>>>> for (Result linkRowResult : scanner ) { > >> >> >>>>> String row = Bytes.toString(linkRowResult.getRow()); > >> >> >>>>> } > >> >> >>>>> > >> >> >>>>> > >> >> >>>>> > >> >> >>>>> > >> >> >>>>> llpind wrote: > >> >> >>>>>> > >> >> >>>>>> Hey, > >> >> >>>>>> > >> >> >>>>>> I'm doing the following to get a scanner on a tall table: > >> >> >>>>>> > >> >> >>>>>> Scan linkScan = new Scan();. > >> >> >>>>>> linkScan.addColumn(Bytes.toBytes("type"), > >> >> >>>>>> Bytes.toBytes("ELECTRONICS")); > >> >> >>>>>> ResultScanner scanner = tblEntity.getScanner(linkScan); > >> >> >>>>>> for (Result linkRowResult : scanner ) { > >> >> >>>>>> String row = Bytes.toString(linkRowResult.getRow()); > >> >> >>>>>> } > >> >> >>>>>> > >> >> >>>>>> > >> >> >>>>>> > >> ================================================================ > >> >> >>>>>> at org.apache.hadoop.util.RunJar.main(RunJar.java:156) > >> >> >>>>>> Caused by: org.apache.hadoop.hbase.UnknownScannerException: > >> >> >>>>>> org.apache.hadoop.hbase.UnknownScannerException: > >> >> -2823498412219891315 > >> >> >>>>>> at > >> >> >>>>>> > >> >> > >> > org.apache.hadoop.hbase.regionserver.HRegionServer.close(HRegionServer.java:1894) > >> >> >>>>>> at sun.reflect.GeneratedMethodAccessor9.invoke(Unknown > >> >> >>>>>> Source) > >> >> >>>>>> at > >> >> >>>>>> > >> >> > >> > sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) > >> >> >>>>>> at java.lang.reflect.Method.invoke(Method.java:597) > >> >> >>>>>> at > >> >> >>>>>> > >> >> org.apache.hadoop.hbase.ipc.HBaseRPC$Server.call(HBaseRPC.java:643) > >> >> >>>>>> at > >> >> >>>>>> > >> >> > >> > org.apache.hadoop.hbase.ipc.HBaseServer$Handler.run(HBaseServer.java:913) > >> >> >>>>>> > >> >> >>>>>> at > >> >> >>>>>> sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native > >> >> >>>>>> Method) > >> >> >>>>>> at > >> >> >>>>>> > >> >> > >> > sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39) > >> >> >>>>>> at > >> >> >>>>>> > >> >> > >> > sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27) > >> >> >>>>>> at > >> >> >>>>>> > java.lang.reflect.Constructor.newInstance(Constructor.java:513) > >> >> >>>>>> at > >> >> >>>>>> > >> >> > >> > org.apache.hadoop.hbase.RemoteExceptionHandler.decodeRemoteException(RemoteExceptionHandler.java:94) > >> >> >>>>>> at > >> >> >>>>>> > >> >> > >> > org.apache.hadoop.hbase.client.HConnectionManager$TableServers.getRegionServerWithRetries(HConnectionManager.java:928) > >> >> >>>>>> at > >> >> >>>>>> > >> >> > >> > org.apache.hadoop.hbase.client.HTable$ClientScanner.nextScanner(HTable.java:1764) > >> >> >>>>>> at > >> >> >>>>>> > >> >> > >> > org.apache.hadoop.hbase.client.HTable$ClientScanner.next(HTable.java:1859) > >> >> >>>>>> at > >> >> >>>>>> > >> >> > >> > org.apache.hadoop.hbase.client.HTable$ClientScanner$1.hasNext(HTable.java:1915) > >> >> >>>>>> ... 8 more > >> >> >>>>>> > >> >> >>>>>> > >> >> >>>>>> > >> >> >>>>> > >> >> >>>>> -- > >> >> >>>>> View this message in context: > >> >> >>>>> > >> >> > >> > http://www.nabble.com/Scanner-exceptions-in-.20-tp24225950p24226108.html > >> >> >>>>> Sent from the HBase User mailing list archive at Nabble.com. > >> >> >>>>> > >> >> >>>>> > >> >> >>>> > >> >> >>>> > >> >> >>> > >> >> >>> > >> >> >> > >> >> >> -- > >> >> >> View this message in context: > >> >> >> > >> >> > >> > http://www.nabble.com/Scanner-exceptions-in-.20-tp24225950p24227420.html > >> >> >> Sent from the HBase User mailing list archive at Nabble.com. > >> >> >> > >> >> >> > >> >> > > >> >> > > >> >> > >> >> -- > >> >> View this message in context: > >> >> > >> > http://www.nabble.com/Scanner-exceptions-in-.20-tp24225950p24227741.html > >> >> Sent from the HBase User mailing list archive at Nabble.com. > >> >> > >> >> > >> > > >> > > >> > >> -- > >> View this message in context: > >> > http://www.nabble.com/Scanner-exceptions-in-.20-tp24225950p24261192.html > >> Sent from the HBase User mailing list archive at Nabble.com. > >> > >> > > > > > > -- > View this message in context: > http://www.nabble.com/Scanner-exceptions-in-.20-tp24225950p24261684.html > Sent from the HBase User mailing list archive at Nabble.com. > >
