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Posted to user@cassandra.apache.org by "Amin Sakka, Novapost" <am...@novapost.fr> on 2010/12/15 17:13:54 UTC
Too many open files Exception + java.lang.ArithmeticException: / by zero
*Hello,*
*I'm using cassandra 0.7.0 rc1, a single node configuration, replication
factor 1, random partitioner, 2 GO heap size.*
*I ran my hector client to insert 5.000.000 rows but after a couple of
hours, the following Exception occurs : *
WARN [main] 2010-12-15 16:38:53,335 CustomTThreadPoolServer.java (line 104)
Transport error occurred during acceptance of message.
org.apache.thrift.transport.TTransportException: java.net.SocketException:
Too many open files
at
org.apache.thrift.transport.TServerSocket.acceptImpl(TServerSocket.java:124)
at
org.apache.cassandra.thrift.TCustomServerSocket.acceptImpl(TCustomServerSocket.java:67)
at
org.apache.cassandra.thrift.TCustomServerSocket.acceptImpl(TCustomServerSocket.java:38)
at
org.apache.thrift.transport.TServerTransport.accept(TServerTransport.java:31)
at
org.apache.cassandra.thrift.CustomTThreadPoolServer.serve(CustomTThreadPoolServer.java:98)
at
org.apache.cassandra.thrift.CassandraDaemon.start(CassandraDaemon.java:120)
at
org.apache.cassandra.service.AbstractCassandraDaemon.activate(AbstractCassandraDaemon.java:229)
at
org.apache.cassandra.thrift.CassandraDaemon.main(CassandraDaemon.java:134)
Caused by: java.net.SocketException: Too many open files
at java.net.PlainSocketImpl.socketAccept(Native Method)
at java.net.PlainSocketImpl.accept(PlainSocketImpl.java:384)
at java.net.ServerSocket.implAccept(ServerSocket.java:453)
at java.net.ServerSocket.accept(ServerSocket.java:421)
at
org.apache.thrift.transport.TServerSocket.acceptImpl(TServerSocket.java:119)
*When I try to restart Cassandra, I have the following exception :*
ERROR 16:42:26,573 Exception encountered during startup.
java.lang.ArithmeticException: / by zero
at
org.apache.cassandra.io.sstable.SSTable.estimateRowsFromIndex(SSTable.java:233)
at
org.apache.cassandra.io.sstable.SSTableReader.load(SSTableReader.java:284)
at
org.apache.cassandra.io.sstable.SSTableReader.open(SSTableReader.java:200)
at
org.apache.cassandra.db.ColumnFamilyStore.<init>(ColumnFamilyStore.java:225)
at
org.apache.cassandra.db.ColumnFamilyStore.createColumnFamilyStore(ColumnFamilyStore.java:449)
at
org.apache.cassandra.db.ColumnFamilyStore.addIndex(ColumnFamilyStore.java:306)
at
org.apache.cassandra.db.ColumnFamilyStore.<init>(ColumnFamilyStore.java:246)
at
org.apache.cassandra.db.ColumnFamilyStore.createColumnFamilyStore(ColumnFamilyStore.java:449)
at
org.apache.cassandra.db.ColumnFamilyStore.createColumnFamilyStore(ColumnFamilyStore.java:437)
at org.apache.cassandra.db.Table.initCf(Table.java:341)
at org.apache.cassandra.db.Table.<init>(Table.java:283)
at org.apache.cassandra.db.Table.open(Table.java:114)
at
org.apache.cassandra.service.AbstractCassandraDaemon.setup(AbstractCassandraDaemon.java:138)
at
org.apache.cassandra.thrift.CassandraDaemon.setup(CassandraDaemon.java:55)
at
org.apache.cassandra.service.AbstractCassandraDaemon.activate(AbstractCassandraDaemon.java:216)
at
org.apache.cassandra.thrift.CassandraDaemon.main(CassandraDaemon.java:134)
I am looking for advice on how to debug this.
Thanks,
--
Amin
Re: Too many open files Exception + java.lang.ArithmeticException: /
by zero
Posted by Germán Kondolf <ge...@gmail.com>.
Be careful with the unlimited value on ulimit, you could end up with a
unresponsive server... I mean, you could not even connect via ssh if you
don't have enough handles.
On Thu, Dec 16, 2010 at 9:59 AM, Amin Sakka, Novapost <
amin.sakka@novapost.fr> wrote:
>
> I increased the amount of the allowed file descriptors to "unlimted".
> Now, I get exactly the same exception after 3.500000 rows :
>
> *CustomTThreadPoolServer.java (line 104) Transport error occurred during
> acceptance of message.*
> *org.apache.thrift.transport.TTransportException:
> java.net.SocketException: Too many open files*
> *
> *
> What worries me is this / by zero exception when I try to restart cassandra
> ! At least, I want to backup the 3.500000 rows to continue then my
> insertion, is there a way to do this?
>
> *
> Exception encountered during startup.
> java.lang.ArithmeticException: / by zero
> at
> org.apache.cassandra.io.sstable.SSTable.estimateRowsFromIndex(SSTable.java:233)
>
> *
>
>
> Thanks.
> *
> *
>
>
>
>
>
> 2010/12/15 Jake Luciani <ja...@gmail.com>
>
>
>> http://www.riptano.com/docs/0.6/troubleshooting/index#java-reports-an-error-saying-there-are-too-many-open-files
>>
>>
>>
>> On Wed, Dec 15, 2010 at 11:13 AM, Amin Sakka, Novapost <
>> amin.sakka@novapost.fr> wrote:
>>
>>> *Hello,*
>>> *I'm using cassandra 0.7.0 rc1, a single node configuration, replication
>>> factor 1, random partitioner, 2 GO heap size.*
>>> *I ran my hector client to insert 5.000.000 rows but after a couple of
>>> hours, the following Exception occurs : *
>>>
>>>
>>> WARN [main] 2010-12-15 16:38:53,335 CustomTThreadPoolServer.java (line
>>> 104) Transport error occurred during acceptance of message.
>>> org.apache.thrift.transport.TTransportException:
>>> java.net.SocketException: Too many open files
>>> at
>>> org.apache.thrift.transport.TServerSocket.acceptImpl(TServerSocket.java:124)
>>> at
>>> org.apache.cassandra.thrift.TCustomServerSocket.acceptImpl(TCustomServerSocket.java:67)
>>> at
>>> org.apache.cassandra.thrift.TCustomServerSocket.acceptImpl(TCustomServerSocket.java:38)
>>> at
>>> org.apache.thrift.transport.TServerTransport.accept(TServerTransport.java:31)
>>> at
>>> org.apache.cassandra.thrift.CustomTThreadPoolServer.serve(CustomTThreadPoolServer.java:98)
>>> at
>>> org.apache.cassandra.thrift.CassandraDaemon.start(CassandraDaemon.java:120)
>>> at
>>> org.apache.cassandra.service.AbstractCassandraDaemon.activate(AbstractCassandraDaemon.java:229)
>>> at
>>> org.apache.cassandra.thrift.CassandraDaemon.main(CassandraDaemon.java:134)
>>> Caused by: java.net.SocketException: Too many open files
>>> at java.net.PlainSocketImpl.socketAccept(Native Method)
>>> at java.net.PlainSocketImpl.accept(PlainSocketImpl.java:384)
>>> at java.net.ServerSocket.implAccept(ServerSocket.java:453)
>>> at java.net.ServerSocket.accept(ServerSocket.java:421)
>>> at
>>> org.apache.thrift.transport.TServerSocket.acceptImpl(TServerSocket.java:119)
>>>
>>>
>>> *When I try to restart Cassandra, I have the following exception :*
>>>
>>>
>>> ERROR 16:42:26,573 Exception encountered during startup.
>>> java.lang.ArithmeticException: / by zero
>>> at
>>> org.apache.cassandra.io.sstable.SSTable.estimateRowsFromIndex(SSTable.java:233)
>>> at
>>> org.apache.cassandra.io.sstable.SSTableReader.load(SSTableReader.java:284)
>>> at
>>> org.apache.cassandra.io.sstable.SSTableReader.open(SSTableReader.java:200)
>>> at
>>> org.apache.cassandra.db.ColumnFamilyStore.<init>(ColumnFamilyStore.java:225)
>>> at
>>> org.apache.cassandra.db.ColumnFamilyStore.createColumnFamilyStore(ColumnFamilyStore.java:449)
>>> at
>>> org.apache.cassandra.db.ColumnFamilyStore.addIndex(ColumnFamilyStore.java:306)
>>> at
>>> org.apache.cassandra.db.ColumnFamilyStore.<init>(ColumnFamilyStore.java:246)
>>> at
>>> org.apache.cassandra.db.ColumnFamilyStore.createColumnFamilyStore(ColumnFamilyStore.java:449)
>>> at
>>> org.apache.cassandra.db.ColumnFamilyStore.createColumnFamilyStore(ColumnFamilyStore.java:437)
>>> at org.apache.cassandra.db.Table.initCf(Table.java:341)
>>> at org.apache.cassandra.db.Table.<init>(Table.java:283)
>>> at org.apache.cassandra.db.Table.open(Table.java:114)
>>> at
>>> org.apache.cassandra.service.AbstractCassandraDaemon.setup(AbstractCassandraDaemon.java:138)
>>> at
>>> org.apache.cassandra.thrift.CassandraDaemon.setup(CassandraDaemon.java:55)
>>> at
>>> org.apache.cassandra.service.AbstractCassandraDaemon.activate(AbstractCassandraDaemon.java:216)
>>> at
>>> org.apache.cassandra.thrift.CassandraDaemon.main(CassandraDaemon.java:134)
>>>
>>>
>>> I am looking for advice on how to debug this.
>>>
>>> Thanks,
>>>
>>> --
>>>
>>> Amin
>>>
>>>
>>>
>>>
>>>
>>
>
>
> --
>
> Amin SAKKA
> Research and Development Engineer
> 32 rue de Paradis, 75010 Paris
> *Tel:* +33 (0)6 34 14 19 25
> *Mail:* amin.sakka@novapost.fr
> *Web:* www.novapost.fr / www.novapost-rh.fr
>
>
>
>
>
--
//GK
german.kondolf@gmail.com
// sites
http://twitter.com/germanklf
http://www.facebook.com/germanklf
http://ar.linkedin.com/in/germankondolf
Re: Too many open files Exception + java.lang.ArithmeticException: /
by zero
Posted by Jake Luciani <ja...@gmail.com>.
how many sstable "Data.db" files do you see in your system and how big are
they?
Also, how big are the rows you are inserting?
On Thu, Dec 16, 2010 at 7:59 AM, Amin Sakka, Novapost <
amin.sakka@novapost.fr> wrote:
>
> I increased the amount of the allowed file descriptors to "unlimted".
> Now, I get exactly the same exception after 3.500000 rows :
>
> *CustomTThreadPoolServer.java (line 104) Transport error occurred during
> acceptance of message.*
> *org.apache.thrift.transport.TTransportException:
> java.net.SocketException: Too many open files*
> *
> *
> What worries me is this / by zero exception when I try to restart cassandra
> ! At least, I want to backup the 3.500000 rows to continue then my
> insertion, is there a way to do this?
>
> *
> Exception encountered during startup.
> java.lang.ArithmeticException: / by zero
> at
> org.apache.cassandra.io.sstable.SSTable.estimateRowsFromIndex(SSTable.java:233)
>
> *
>
>
> Thanks.
> *
> *
>
>
>
>
>
> 2010/12/15 Jake Luciani <ja...@gmail.com>
>
>
>> http://www.riptano.com/docs/0.6/troubleshooting/index#java-reports-an-error-saying-there-are-too-many-open-files
>>
>>
>>
>> On Wed, Dec 15, 2010 at 11:13 AM, Amin Sakka, Novapost <
>> amin.sakka@novapost.fr> wrote:
>>
>>> *Hello,*
>>> *I'm using cassandra 0.7.0 rc1, a single node configuration, replication
>>> factor 1, random partitioner, 2 GO heap size.*
>>> *I ran my hector client to insert 5.000.000 rows but after a couple of
>>> hours, the following Exception occurs : *
>>>
>>>
>>> WARN [main] 2010-12-15 16:38:53,335 CustomTThreadPoolServer.java (line
>>> 104) Transport error occurred during acceptance of message.
>>> org.apache.thrift.transport.TTransportException:
>>> java.net.SocketException: Too many open files
>>> at
>>> org.apache.thrift.transport.TServerSocket.acceptImpl(TServerSocket.java:124)
>>> at
>>> org.apache.cassandra.thrift.TCustomServerSocket.acceptImpl(TCustomServerSocket.java:67)
>>> at
>>> org.apache.cassandra.thrift.TCustomServerSocket.acceptImpl(TCustomServerSocket.java:38)
>>> at
>>> org.apache.thrift.transport.TServerTransport.accept(TServerTransport.java:31)
>>> at
>>> org.apache.cassandra.thrift.CustomTThreadPoolServer.serve(CustomTThreadPoolServer.java:98)
>>> at
>>> org.apache.cassandra.thrift.CassandraDaemon.start(CassandraDaemon.java:120)
>>> at
>>> org.apache.cassandra.service.AbstractCassandraDaemon.activate(AbstractCassandraDaemon.java:229)
>>> at
>>> org.apache.cassandra.thrift.CassandraDaemon.main(CassandraDaemon.java:134)
>>> Caused by: java.net.SocketException: Too many open files
>>> at java.net.PlainSocketImpl.socketAccept(Native Method)
>>> at java.net.PlainSocketImpl.accept(PlainSocketImpl.java:384)
>>> at java.net.ServerSocket.implAccept(ServerSocket.java:453)
>>> at java.net.ServerSocket.accept(ServerSocket.java:421)
>>> at
>>> org.apache.thrift.transport.TServerSocket.acceptImpl(TServerSocket.java:119)
>>>
>>>
>>> *When I try to restart Cassandra, I have the following exception :*
>>>
>>>
>>> ERROR 16:42:26,573 Exception encountered during startup.
>>> java.lang.ArithmeticException: / by zero
>>> at
>>> org.apache.cassandra.io.sstable.SSTable.estimateRowsFromIndex(SSTable.java:233)
>>> at
>>> org.apache.cassandra.io.sstable.SSTableReader.load(SSTableReader.java:284)
>>> at
>>> org.apache.cassandra.io.sstable.SSTableReader.open(SSTableReader.java:200)
>>> at
>>> org.apache.cassandra.db.ColumnFamilyStore.<init>(ColumnFamilyStore.java:225)
>>> at
>>> org.apache.cassandra.db.ColumnFamilyStore.createColumnFamilyStore(ColumnFamilyStore.java:449)
>>> at
>>> org.apache.cassandra.db.ColumnFamilyStore.addIndex(ColumnFamilyStore.java:306)
>>> at
>>> org.apache.cassandra.db.ColumnFamilyStore.<init>(ColumnFamilyStore.java:246)
>>> at
>>> org.apache.cassandra.db.ColumnFamilyStore.createColumnFamilyStore(ColumnFamilyStore.java:449)
>>> at
>>> org.apache.cassandra.db.ColumnFamilyStore.createColumnFamilyStore(ColumnFamilyStore.java:437)
>>> at org.apache.cassandra.db.Table.initCf(Table.java:341)
>>> at org.apache.cassandra.db.Table.<init>(Table.java:283)
>>> at org.apache.cassandra.db.Table.open(Table.java:114)
>>> at
>>> org.apache.cassandra.service.AbstractCassandraDaemon.setup(AbstractCassandraDaemon.java:138)
>>> at
>>> org.apache.cassandra.thrift.CassandraDaemon.setup(CassandraDaemon.java:55)
>>> at
>>> org.apache.cassandra.service.AbstractCassandraDaemon.activate(AbstractCassandraDaemon.java:216)
>>> at
>>> org.apache.cassandra.thrift.CassandraDaemon.main(CassandraDaemon.java:134)
>>>
>>>
>>> I am looking for advice on how to debug this.
>>>
>>> Thanks,
>>>
>>> --
>>>
>>> Amin
>>>
>>>
>>>
>>>
>>>
>>
>
>
> --
>
> Amin SAKKA
> Research and Development Engineer
> 32 rue de Paradis, 75010 Paris
> *Tel:* +33 (0)6 34 14 19 25
> *Mail:* amin.sakka@novapost.fr
> *Web:* www.novapost.fr / www.novapost-rh.fr
>
>
>
>
>
Re: Too many open files Exception + java.lang.ArithmeticException: /
by zero
Posted by "Amin Sakka, Novapost" <am...@novapost.fr>.
I increased the amount of the allowed file descriptors to "unlimted".
Now, I get exactly the same exception after 3.500000 rows :
*CustomTThreadPoolServer.java (line 104) Transport error occurred during
acceptance of message.*
*org.apache.thrift.transport.TTransportException: java.net.SocketException:
Too many open files*
*
*
What worries me is this / by zero exception when I try to restart cassandra
! At least, I want to backup the 3.500000 rows to continue then my
insertion, is there a way to do this?
*
Exception encountered during startup.
java.lang.ArithmeticException: / by zero
at
org.apache.cassandra.io.sstable.SSTable.estimateRowsFromIndex(SSTable.java:233)
*
Thanks.
*
*
2010/12/15 Jake Luciani <ja...@gmail.com>
>
> http://www.riptano.com/docs/0.6/troubleshooting/index#java-reports-an-error-saying-there-are-too-many-open-files
>
>
>
> On Wed, Dec 15, 2010 at 11:13 AM, Amin Sakka, Novapost <
> amin.sakka@novapost.fr> wrote:
>
>> *Hello,*
>> *I'm using cassandra 0.7.0 rc1, a single node configuration, replication
>> factor 1, random partitioner, 2 GO heap size.*
>> *I ran my hector client to insert 5.000.000 rows but after a couple of
>> hours, the following Exception occurs : *
>>
>>
>> WARN [main] 2010-12-15 16:38:53,335 CustomTThreadPoolServer.java (line
>> 104) Transport error occurred during acceptance of message.
>> org.apache.thrift.transport.TTransportException: java.net.SocketException:
>> Too many open files
>> at
>> org.apache.thrift.transport.TServerSocket.acceptImpl(TServerSocket.java:124)
>> at
>> org.apache.cassandra.thrift.TCustomServerSocket.acceptImpl(TCustomServerSocket.java:67)
>> at
>> org.apache.cassandra.thrift.TCustomServerSocket.acceptImpl(TCustomServerSocket.java:38)
>> at
>> org.apache.thrift.transport.TServerTransport.accept(TServerTransport.java:31)
>> at
>> org.apache.cassandra.thrift.CustomTThreadPoolServer.serve(CustomTThreadPoolServer.java:98)
>> at
>> org.apache.cassandra.thrift.CassandraDaemon.start(CassandraDaemon.java:120)
>> at
>> org.apache.cassandra.service.AbstractCassandraDaemon.activate(AbstractCassandraDaemon.java:229)
>> at
>> org.apache.cassandra.thrift.CassandraDaemon.main(CassandraDaemon.java:134)
>> Caused by: java.net.SocketException: Too many open files
>> at java.net.PlainSocketImpl.socketAccept(Native Method)
>> at java.net.PlainSocketImpl.accept(PlainSocketImpl.java:384)
>> at java.net.ServerSocket.implAccept(ServerSocket.java:453)
>> at java.net.ServerSocket.accept(ServerSocket.java:421)
>> at
>> org.apache.thrift.transport.TServerSocket.acceptImpl(TServerSocket.java:119)
>>
>>
>> *When I try to restart Cassandra, I have the following exception :*
>>
>>
>> ERROR 16:42:26,573 Exception encountered during startup.
>> java.lang.ArithmeticException: / by zero
>> at
>> org.apache.cassandra.io.sstable.SSTable.estimateRowsFromIndex(SSTable.java:233)
>> at
>> org.apache.cassandra.io.sstable.SSTableReader.load(SSTableReader.java:284)
>> at
>> org.apache.cassandra.io.sstable.SSTableReader.open(SSTableReader.java:200)
>> at
>> org.apache.cassandra.db.ColumnFamilyStore.<init>(ColumnFamilyStore.java:225)
>> at
>> org.apache.cassandra.db.ColumnFamilyStore.createColumnFamilyStore(ColumnFamilyStore.java:449)
>> at
>> org.apache.cassandra.db.ColumnFamilyStore.addIndex(ColumnFamilyStore.java:306)
>> at
>> org.apache.cassandra.db.ColumnFamilyStore.<init>(ColumnFamilyStore.java:246)
>> at
>> org.apache.cassandra.db.ColumnFamilyStore.createColumnFamilyStore(ColumnFamilyStore.java:449)
>> at
>> org.apache.cassandra.db.ColumnFamilyStore.createColumnFamilyStore(ColumnFamilyStore.java:437)
>> at org.apache.cassandra.db.Table.initCf(Table.java:341)
>> at org.apache.cassandra.db.Table.<init>(Table.java:283)
>> at org.apache.cassandra.db.Table.open(Table.java:114)
>> at
>> org.apache.cassandra.service.AbstractCassandraDaemon.setup(AbstractCassandraDaemon.java:138)
>> at
>> org.apache.cassandra.thrift.CassandraDaemon.setup(CassandraDaemon.java:55)
>> at
>> org.apache.cassandra.service.AbstractCassandraDaemon.activate(AbstractCassandraDaemon.java:216)
>> at
>> org.apache.cassandra.thrift.CassandraDaemon.main(CassandraDaemon.java:134)
>>
>>
>> I am looking for advice on how to debug this.
>>
>> Thanks,
>>
>> --
>>
>> Amin
>>
>>
>>
>>
>>
>
--
Amin SAKKA
Research and Development Engineer
32 rue de Paradis, 75010 Paris
*Tel:* +33 (0)6 34 14 19 25
*Mail:* amin.sakka@novapost.fr
*Web:* www.novapost.fr / www.novapost-rh.fr
Re: Too many open files Exception + java.lang.ArithmeticException: /
by zero
Posted by Jake Luciani <ja...@gmail.com>.
http://www.riptano.com/docs/0.6/troubleshooting/index#java-reports-an-error-saying-there-are-too-many-open-files
On Wed, Dec 15, 2010 at 11:13 AM, Amin Sakka, Novapost <
amin.sakka@novapost.fr> wrote:
> *Hello,*
> *I'm using cassandra 0.7.0 rc1, a single node configuration, replication
> factor 1, random partitioner, 2 GO heap size.*
> *I ran my hector client to insert 5.000.000 rows but after a couple of
> hours, the following Exception occurs : *
>
>
> WARN [main] 2010-12-15 16:38:53,335 CustomTThreadPoolServer.java (line
> 104) Transport error occurred during acceptance of message.
> org.apache.thrift.transport.TTransportException: java.net.SocketException:
> Too many open files
> at
> org.apache.thrift.transport.TServerSocket.acceptImpl(TServerSocket.java:124)
> at
> org.apache.cassandra.thrift.TCustomServerSocket.acceptImpl(TCustomServerSocket.java:67)
> at
> org.apache.cassandra.thrift.TCustomServerSocket.acceptImpl(TCustomServerSocket.java:38)
> at
> org.apache.thrift.transport.TServerTransport.accept(TServerTransport.java:31)
> at
> org.apache.cassandra.thrift.CustomTThreadPoolServer.serve(CustomTThreadPoolServer.java:98)
> at
> org.apache.cassandra.thrift.CassandraDaemon.start(CassandraDaemon.java:120)
> at
> org.apache.cassandra.service.AbstractCassandraDaemon.activate(AbstractCassandraDaemon.java:229)
> at
> org.apache.cassandra.thrift.CassandraDaemon.main(CassandraDaemon.java:134)
> Caused by: java.net.SocketException: Too many open files
> at java.net.PlainSocketImpl.socketAccept(Native Method)
> at java.net.PlainSocketImpl.accept(PlainSocketImpl.java:384)
> at java.net.ServerSocket.implAccept(ServerSocket.java:453)
> at java.net.ServerSocket.accept(ServerSocket.java:421)
> at
> org.apache.thrift.transport.TServerSocket.acceptImpl(TServerSocket.java:119)
>
>
> *When I try to restart Cassandra, I have the following exception :*
>
>
> ERROR 16:42:26,573 Exception encountered during startup.
> java.lang.ArithmeticException: / by zero
> at
> org.apache.cassandra.io.sstable.SSTable.estimateRowsFromIndex(SSTable.java:233)
> at
> org.apache.cassandra.io.sstable.SSTableReader.load(SSTableReader.java:284)
> at
> org.apache.cassandra.io.sstable.SSTableReader.open(SSTableReader.java:200)
> at
> org.apache.cassandra.db.ColumnFamilyStore.<init>(ColumnFamilyStore.java:225)
> at
> org.apache.cassandra.db.ColumnFamilyStore.createColumnFamilyStore(ColumnFamilyStore.java:449)
> at
> org.apache.cassandra.db.ColumnFamilyStore.addIndex(ColumnFamilyStore.java:306)
> at
> org.apache.cassandra.db.ColumnFamilyStore.<init>(ColumnFamilyStore.java:246)
> at
> org.apache.cassandra.db.ColumnFamilyStore.createColumnFamilyStore(ColumnFamilyStore.java:449)
> at
> org.apache.cassandra.db.ColumnFamilyStore.createColumnFamilyStore(ColumnFamilyStore.java:437)
> at org.apache.cassandra.db.Table.initCf(Table.java:341)
> at org.apache.cassandra.db.Table.<init>(Table.java:283)
> at org.apache.cassandra.db.Table.open(Table.java:114)
> at
> org.apache.cassandra.service.AbstractCassandraDaemon.setup(AbstractCassandraDaemon.java:138)
> at
> org.apache.cassandra.thrift.CassandraDaemon.setup(CassandraDaemon.java:55)
> at
> org.apache.cassandra.service.AbstractCassandraDaemon.activate(AbstractCassandraDaemon.java:216)
> at
> org.apache.cassandra.thrift.CassandraDaemon.main(CassandraDaemon.java:134)
>
>
> I am looking for advice on how to debug this.
>
> Thanks,
>
> --
>
> Amin
>
>
>
>
>
Re: Too many open files Exception + java.lang.ArithmeticException: /
by zero
Posted by Nate McCall <na...@riptano.com>.
You probably want to switch to using mutator#addInsertion for some
number of iterations (start with 1000 and adjust as needed), then
calling execute(). This will be much more efficient.
On Thu, Dec 16, 2010 at 11:39 AM, Amin Sakka, Novapost
<am...@novapost.fr> wrote:
>
> I'm using a unique client instance (using Hector) and a unique connection to
> cassandra.
> For each insertion I'm using a new mutator and then I release it.
> I have 473 sstable "Data.db", the average size of each is 30Mo.
>
>
>
> 2010/12/16 Ryan King <ry...@twitter.com>
>>
>> Are you creating a new connection for each row you insert (and if so
>> are you closing it)?
>>
>> -ryan
>>
>> On Wed, Dec 15, 2010 at 8:13 AM, Amin Sakka, Novapost
>> <am...@novapost.fr> wrote:
>> > Hello,
>> > I'm using cassandra 0.7.0 rc1, a single node configuration, replication
>> > factor 1, random partitioner, 2 GO heap size.
>> > I ran my hector client to insert 5.000.000 rows but after a couple of
>> > hours,
>> > the following Exception occurs :
>> >
>> > WARN [main] 2010-12-15 16:38:53,335 CustomTThreadPoolServer.java (line
>> > 104)
>> > Transport error occurred during acceptance of message.
>> > org.apache.thrift.transport.TTransportException:
>> > java.net.SocketException:
>> > Too many open files
>> > at
>> >
>> > org.apache.thrift.transport.TServerSocket.acceptImpl(TServerSocket.java:124)
>> > at
>> >
>> > org.apache.cassandra.thrift.TCustomServerSocket.acceptImpl(TCustomServerSocket.java:67)
>> > at
>> >
>> > org.apache.cassandra.thrift.TCustomServerSocket.acceptImpl(TCustomServerSocket.java:38)
>> > at
>> >
>> > org.apache.thrift.transport.TServerTransport.accept(TServerTransport.java:31)
>> > at
>> >
>> > org.apache.cassandra.thrift.CustomTThreadPoolServer.serve(CustomTThreadPoolServer.java:98)
>> > at
>> >
>> > org.apache.cassandra.thrift.CassandraDaemon.start(CassandraDaemon.java:120)
>> > at
>> >
>> > org.apache.cassandra.service.AbstractCassandraDaemon.activate(AbstractCassandraDaemon.java:229)
>> > at
>> >
>> > org.apache.cassandra.thrift.CassandraDaemon.main(CassandraDaemon.java:134)
>> > Caused by: java.net.SocketException: Too many open files
>> > at java.net.PlainSocketImpl.socketAccept(Native Method)
>> > at java.net.PlainSocketImpl.accept(PlainSocketImpl.java:384)
>> > at java.net.ServerSocket.implAccept(ServerSocket.java:453)
>> > at java.net.ServerSocket.accept(ServerSocket.java:421)
>> > at
>> >
>> > org.apache.thrift.transport.TServerSocket.acceptImpl(TServerSocket.java:119)
>> >
>> > When I try to restart Cassandra, I have the following exception :
>> >
>> > ERROR 16:42:26,573 Exception encountered during startup.
>> > java.lang.ArithmeticException: / by zero
>> > at
>> >
>> > org.apache.cassandra.io.sstable.SSTable.estimateRowsFromIndex(SSTable.java:233)
>> > at
>> >
>> > org.apache.cassandra.io.sstable.SSTableReader.load(SSTableReader.java:284)
>> > at
>> >
>> > org.apache.cassandra.io.sstable.SSTableReader.open(SSTableReader.java:200)
>> > at
>> >
>> > org.apache.cassandra.db.ColumnFamilyStore.<init>(ColumnFamilyStore.java:225)
>> > at
>> >
>> > org.apache.cassandra.db.ColumnFamilyStore.createColumnFamilyStore(ColumnFamilyStore.java:449)
>> > at
>> >
>> > org.apache.cassandra.db.ColumnFamilyStore.addIndex(ColumnFamilyStore.java:306)
>> > at
>> >
>> > org.apache.cassandra.db.ColumnFamilyStore.<init>(ColumnFamilyStore.java:246)
>> > at
>> >
>> > org.apache.cassandra.db.ColumnFamilyStore.createColumnFamilyStore(ColumnFamilyStore.java:449)
>> > at
>> >
>> > org.apache.cassandra.db.ColumnFamilyStore.createColumnFamilyStore(ColumnFamilyStore.java:437)
>> > at org.apache.cassandra.db.Table.initCf(Table.java:341)
>> > at org.apache.cassandra.db.Table.<init>(Table.java:283)
>> > at org.apache.cassandra.db.Table.open(Table.java:114)
>> > at
>> >
>> > org.apache.cassandra.service.AbstractCassandraDaemon.setup(AbstractCassandraDaemon.java:138)
>> > at
>> >
>> > org.apache.cassandra.thrift.CassandraDaemon.setup(CassandraDaemon.java:55)
>> > at
>> >
>> > org.apache.cassandra.service.AbstractCassandraDaemon.activate(AbstractCassandraDaemon.java:216)
>> > at
>> >
>> > org.apache.cassandra.thrift.CassandraDaemon.main(CassandraDaemon.java:134)
>> >
>> > I am looking for advice on how to debug this.
>> >
>> > Thanks,
>> > --
>> >
>> > Amin
>> >
>> >
>> >
>> >
>> >
>
>
>
> --
> Amin
>
>
>
>
Re: Too many open files Exception + java.lang.ArithmeticException: /
by zero
Posted by Kani <ja...@gmail.com>.
Ya, that happens when some operation throws a time out or any other sort of
operation (connection refuse, etc). There is a failback logic that will try
to discover all the nodes within the Cluster (not only the ones you
configured) in order to reach the cluster and execution the operation.
Have you seen the log of Cassandra? You might be having a problem on your
client when a Compactation is kicked. Doing so, all your connections to the
node will be much slower. This may introduce a a file handling problem,
since your client will continue to stack up connections against Cassandra.
If you see that this is the problem that you are having, see how you can
manage to raise such limitation to a higher value that will let you get
through Cassandra compactation.
Kani
On Thu, Dec 16, 2010 at 2:48 PM, Germán Kondolf <ge...@gmail.com>wrote:
> Indeed Hector has a connection pool behind it, I think it uses 50
> connectios per node.
> But also uses a node to discover the others, I assume that, as I saw
> connections from my app to nodes that I didn't configure in Hector.
>
> So, you may check the fds in OS level to see if there is a bottleneck
> there.
>
> On Thu, Dec 16, 2010 at 2:39 PM, Amin Sakka, Novapost
> <am...@novapost.fr> wrote:
> >
> > I'm using a unique client instance (using Hector) and a unique connection
> to
> > cassandra.
> > For each insertion I'm using a new mutator and then I release it.
> > I have 473 sstable "Data.db", the average size of each is 30Mo.
> >
> >
> >
> > 2010/12/16 Ryan King <ry...@twitter.com>
> >>
> >> Are you creating a new connection for each row you insert (and if so
> >> are you closing it)?
> >>
> >> -ryan
> >>
> >> On Wed, Dec 15, 2010 at 8:13 AM, Amin Sakka, Novapost
> >> <am...@novapost.fr> wrote:
> >> > Hello,
> >> > I'm using cassandra 0.7.0 rc1, a single node configuration,
> replication
> >> > factor 1, random partitioner, 2 GO heap size.
> >> > I ran my hector client to insert 5.000.000 rows but after a couple of
> >> > hours,
> >> > the following Exception occurs :
> >> >
> >> > WARN [main] 2010-12-15 16:38:53,335 CustomTThreadPoolServer.java
> (line
> >> > 104)
> >> > Transport error occurred during acceptance of message.
> >> > org.apache.thrift.transport.TTransportException:
> >> > java.net.SocketException:
> >> > Too many open files
> >> > at
> >> >
> >> >
> org.apache.thrift.transport.TServerSocket.acceptImpl(TServerSocket.java:124)
> >> > at
> >> >
> >> >
> org.apache.cassandra.thrift.TCustomServerSocket.acceptImpl(TCustomServerSocket.java:67)
> >> > at
> >> >
> >> >
> org.apache.cassandra.thrift.TCustomServerSocket.acceptImpl(TCustomServerSocket.java:38)
> >> > at
> >> >
> >> >
> org.apache.thrift.transport.TServerTransport.accept(TServerTransport.java:31)
> >> > at
> >> >
> >> >
> org.apache.cassandra.thrift.CustomTThreadPoolServer.serve(CustomTThreadPoolServer.java:98)
> >> > at
> >> >
> >> >
> org.apache.cassandra.thrift.CassandraDaemon.start(CassandraDaemon.java:120)
> >> > at
> >> >
> >> >
> org.apache.cassandra.service.AbstractCassandraDaemon.activate(AbstractCassandraDaemon.java:229)
> >> > at
> >> >
> >> >
> org.apache.cassandra.thrift.CassandraDaemon.main(CassandraDaemon.java:134)
> >> > Caused by: java.net.SocketException: Too many open files
> >> > at java.net.PlainSocketImpl.socketAccept(Native Method)
> >> > at java.net.PlainSocketImpl.accept(PlainSocketImpl.java:384)
> >> > at java.net.ServerSocket.implAccept(ServerSocket.java:453)
> >> > at java.net.ServerSocket.accept(ServerSocket.java:421)
> >> > at
> >> >
> >> >
> org.apache.thrift.transport.TServerSocket.acceptImpl(TServerSocket.java:119)
> >> >
> >> > When I try to restart Cassandra, I have the following exception :
> >> >
> >> > ERROR 16:42:26,573 Exception encountered during startup.
> >> > java.lang.ArithmeticException: / by zero
> >> > at
> >> >
> >> >
> org.apache.cassandra.io.sstable.SSTable.estimateRowsFromIndex(SSTable.java:233)
> >> > at
> >> >
> >> >
> org.apache.cassandra.io.sstable.SSTableReader.load(SSTableReader.java:284)
> >> > at
> >> >
> >> >
> org.apache.cassandra.io.sstable.SSTableReader.open(SSTableReader.java:200)
> >> > at
> >> >
> >> >
> org.apache.cassandra.db.ColumnFamilyStore.<init>(ColumnFamilyStore.java:225)
> >> > at
> >> >
> >> >
> org.apache.cassandra.db.ColumnFamilyStore.createColumnFamilyStore(ColumnFamilyStore.java:449)
> >> > at
> >> >
> >> >
> org.apache.cassandra.db.ColumnFamilyStore.addIndex(ColumnFamilyStore.java:306)
> >> > at
> >> >
> >> >
> org.apache.cassandra.db.ColumnFamilyStore.<init>(ColumnFamilyStore.java:246)
> >> > at
> >> >
> >> >
> org.apache.cassandra.db.ColumnFamilyStore.createColumnFamilyStore(ColumnFamilyStore.java:449)
> >> > at
> >> >
> >> >
> org.apache.cassandra.db.ColumnFamilyStore.createColumnFamilyStore(ColumnFamilyStore.java:437)
> >> > at org.apache.cassandra.db.Table.initCf(Table.java:341)
> >> > at org.apache.cassandra.db.Table.<init>(Table.java:283)
> >> > at org.apache.cassandra.db.Table.open(Table.java:114)
> >> > at
> >> >
> >> >
> org.apache.cassandra.service.AbstractCassandraDaemon.setup(AbstractCassandraDaemon.java:138)
> >> > at
> >> >
> >> >
> org.apache.cassandra.thrift.CassandraDaemon.setup(CassandraDaemon.java:55)
> >> > at
> >> >
> >> >
> org.apache.cassandra.service.AbstractCassandraDaemon.activate(AbstractCassandraDaemon.java:216)
> >> > at
> >> >
> >> >
> org.apache.cassandra.thrift.CassandraDaemon.main(CassandraDaemon.java:134)
> >> >
> >> > I am looking for advice on how to debug this.
> >> >
> >> > Thanks,
> >> > --
> >> >
> >> > Amin
> >> >
> >> >
> >> >
> >> >
> >> >
> >
> >
> >
> > --
> > Amin
> >
> >
> >
> >
>
>
>
> --
> //GK
> german.kondolf@gmail.com
> // sites
> http://twitter.com/germanklf
> http://www.facebook.com/germanklf
> http://ar.linkedin.com/in/germankondolf
>
Re: Too many open files Exception + java.lang.ArithmeticException: /
by zero
Posted by Germán Kondolf <ge...@gmail.com>.
Indeed Hector has a connection pool behind it, I think it uses 50
connectios per node.
But also uses a node to discover the others, I assume that, as I saw
connections from my app to nodes that I didn't configure in Hector.
So, you may check the fds in OS level to see if there is a bottleneck there.
On Thu, Dec 16, 2010 at 2:39 PM, Amin Sakka, Novapost
<am...@novapost.fr> wrote:
>
> I'm using a unique client instance (using Hector) and a unique connection to
> cassandra.
> For each insertion I'm using a new mutator and then I release it.
> I have 473 sstable "Data.db", the average size of each is 30Mo.
>
>
>
> 2010/12/16 Ryan King <ry...@twitter.com>
>>
>> Are you creating a new connection for each row you insert (and if so
>> are you closing it)?
>>
>> -ryan
>>
>> On Wed, Dec 15, 2010 at 8:13 AM, Amin Sakka, Novapost
>> <am...@novapost.fr> wrote:
>> > Hello,
>> > I'm using cassandra 0.7.0 rc1, a single node configuration, replication
>> > factor 1, random partitioner, 2 GO heap size.
>> > I ran my hector client to insert 5.000.000 rows but after a couple of
>> > hours,
>> > the following Exception occurs :
>> >
>> > WARN [main] 2010-12-15 16:38:53,335 CustomTThreadPoolServer.java (line
>> > 104)
>> > Transport error occurred during acceptance of message.
>> > org.apache.thrift.transport.TTransportException:
>> > java.net.SocketException:
>> > Too many open files
>> > at
>> >
>> > org.apache.thrift.transport.TServerSocket.acceptImpl(TServerSocket.java:124)
>> > at
>> >
>> > org.apache.cassandra.thrift.TCustomServerSocket.acceptImpl(TCustomServerSocket.java:67)
>> > at
>> >
>> > org.apache.cassandra.thrift.TCustomServerSocket.acceptImpl(TCustomServerSocket.java:38)
>> > at
>> >
>> > org.apache.thrift.transport.TServerTransport.accept(TServerTransport.java:31)
>> > at
>> >
>> > org.apache.cassandra.thrift.CustomTThreadPoolServer.serve(CustomTThreadPoolServer.java:98)
>> > at
>> >
>> > org.apache.cassandra.thrift.CassandraDaemon.start(CassandraDaemon.java:120)
>> > at
>> >
>> > org.apache.cassandra.service.AbstractCassandraDaemon.activate(AbstractCassandraDaemon.java:229)
>> > at
>> >
>> > org.apache.cassandra.thrift.CassandraDaemon.main(CassandraDaemon.java:134)
>> > Caused by: java.net.SocketException: Too many open files
>> > at java.net.PlainSocketImpl.socketAccept(Native Method)
>> > at java.net.PlainSocketImpl.accept(PlainSocketImpl.java:384)
>> > at java.net.ServerSocket.implAccept(ServerSocket.java:453)
>> > at java.net.ServerSocket.accept(ServerSocket.java:421)
>> > at
>> >
>> > org.apache.thrift.transport.TServerSocket.acceptImpl(TServerSocket.java:119)
>> >
>> > When I try to restart Cassandra, I have the following exception :
>> >
>> > ERROR 16:42:26,573 Exception encountered during startup.
>> > java.lang.ArithmeticException: / by zero
>> > at
>> >
>> > org.apache.cassandra.io.sstable.SSTable.estimateRowsFromIndex(SSTable.java:233)
>> > at
>> >
>> > org.apache.cassandra.io.sstable.SSTableReader.load(SSTableReader.java:284)
>> > at
>> >
>> > org.apache.cassandra.io.sstable.SSTableReader.open(SSTableReader.java:200)
>> > at
>> >
>> > org.apache.cassandra.db.ColumnFamilyStore.<init>(ColumnFamilyStore.java:225)
>> > at
>> >
>> > org.apache.cassandra.db.ColumnFamilyStore.createColumnFamilyStore(ColumnFamilyStore.java:449)
>> > at
>> >
>> > org.apache.cassandra.db.ColumnFamilyStore.addIndex(ColumnFamilyStore.java:306)
>> > at
>> >
>> > org.apache.cassandra.db.ColumnFamilyStore.<init>(ColumnFamilyStore.java:246)
>> > at
>> >
>> > org.apache.cassandra.db.ColumnFamilyStore.createColumnFamilyStore(ColumnFamilyStore.java:449)
>> > at
>> >
>> > org.apache.cassandra.db.ColumnFamilyStore.createColumnFamilyStore(ColumnFamilyStore.java:437)
>> > at org.apache.cassandra.db.Table.initCf(Table.java:341)
>> > at org.apache.cassandra.db.Table.<init>(Table.java:283)
>> > at org.apache.cassandra.db.Table.open(Table.java:114)
>> > at
>> >
>> > org.apache.cassandra.service.AbstractCassandraDaemon.setup(AbstractCassandraDaemon.java:138)
>> > at
>> >
>> > org.apache.cassandra.thrift.CassandraDaemon.setup(CassandraDaemon.java:55)
>> > at
>> >
>> > org.apache.cassandra.service.AbstractCassandraDaemon.activate(AbstractCassandraDaemon.java:216)
>> > at
>> >
>> > org.apache.cassandra.thrift.CassandraDaemon.main(CassandraDaemon.java:134)
>> >
>> > I am looking for advice on how to debug this.
>> >
>> > Thanks,
>> > --
>> >
>> > Amin
>> >
>> >
>> >
>> >
>> >
>
>
>
> --
> Amin
>
>
>
>
--
//GK
german.kondolf@gmail.com
// sites
http://twitter.com/germanklf
http://www.facebook.com/germanklf
http://ar.linkedin.com/in/germankondolf
Re: Too many open files Exception + java.lang.ArithmeticException: /
by zero
Posted by "Amin Sakka, Novapost" <am...@novapost.fr>.
I'm using a unique client instance (using Hector) and a unique connection to
cassandra.
For each insertion I'm using a new mutator and then I release it.
I have 473 sstable "Data.db", the average size of each is 30Mo.
2010/12/16 Ryan King <ry...@twitter.com>
> Are you creating a new connection for each row you insert (and if so
> are you closing it)?
>
> -ryan
>
> On Wed, Dec 15, 2010 at 8:13 AM, Amin Sakka, Novapost
> <am...@novapost.fr> wrote:
> > Hello,
> > I'm using cassandra 0.7.0 rc1, a single node configuration, replication
> > factor 1, random partitioner, 2 GO heap size.
> > I ran my hector client to insert 5.000.000 rows but after a couple of
> hours,
> > the following Exception occurs :
> >
> > WARN [main] 2010-12-15 16:38:53,335 CustomTThreadPoolServer.java (line
> 104)
> > Transport error occurred during acceptance of message.
> > org.apache.thrift.transport.TTransportException:
> java.net.SocketException:
> > Too many open files
> > at
> >
> org.apache.thrift.transport.TServerSocket.acceptImpl(TServerSocket.java:124)
> > at
> >
> org.apache.cassandra.thrift.TCustomServerSocket.acceptImpl(TCustomServerSocket.java:67)
> > at
> >
> org.apache.cassandra.thrift.TCustomServerSocket.acceptImpl(TCustomServerSocket.java:38)
> > at
> >
> org.apache.thrift.transport.TServerTransport.accept(TServerTransport.java:31)
> > at
> >
> org.apache.cassandra.thrift.CustomTThreadPoolServer.serve(CustomTThreadPoolServer.java:98)
> > at
> >
> org.apache.cassandra.thrift.CassandraDaemon.start(CassandraDaemon.java:120)
> > at
> >
> org.apache.cassandra.service.AbstractCassandraDaemon.activate(AbstractCassandraDaemon.java:229)
> > at
> >
> org.apache.cassandra.thrift.CassandraDaemon.main(CassandraDaemon.java:134)
> > Caused by: java.net.SocketException: Too many open files
> > at java.net.PlainSocketImpl.socketAccept(Native Method)
> > at java.net.PlainSocketImpl.accept(PlainSocketImpl.java:384)
> > at java.net.ServerSocket.implAccept(ServerSocket.java:453)
> > at java.net.ServerSocket.accept(ServerSocket.java:421)
> > at
> >
> org.apache.thrift.transport.TServerSocket.acceptImpl(TServerSocket.java:119)
> >
> > When I try to restart Cassandra, I have the following exception :
> >
> > ERROR 16:42:26,573 Exception encountered during startup.
> > java.lang.ArithmeticException: / by zero
> > at
> >
> org.apache.cassandra.io.sstable.SSTable.estimateRowsFromIndex(SSTable.java:233)
> > at
> >
> org.apache.cassandra.io.sstable.SSTableReader.load(SSTableReader.java:284)
> > at
> >
> org.apache.cassandra.io.sstable.SSTableReader.open(SSTableReader.java:200)
> > at
> >
> org.apache.cassandra.db.ColumnFamilyStore.<init>(ColumnFamilyStore.java:225)
> > at
> >
> org.apache.cassandra.db.ColumnFamilyStore.createColumnFamilyStore(ColumnFamilyStore.java:449)
> > at
> >
> org.apache.cassandra.db.ColumnFamilyStore.addIndex(ColumnFamilyStore.java:306)
> > at
> >
> org.apache.cassandra.db.ColumnFamilyStore.<init>(ColumnFamilyStore.java:246)
> > at
> >
> org.apache.cassandra.db.ColumnFamilyStore.createColumnFamilyStore(ColumnFamilyStore.java:449)
> > at
> >
> org.apache.cassandra.db.ColumnFamilyStore.createColumnFamilyStore(ColumnFamilyStore.java:437)
> > at org.apache.cassandra.db.Table.initCf(Table.java:341)
> > at org.apache.cassandra.db.Table.<init>(Table.java:283)
> > at org.apache.cassandra.db.Table.open(Table.java:114)
> > at
> >
> org.apache.cassandra.service.AbstractCassandraDaemon.setup(AbstractCassandraDaemon.java:138)
> > at
> >
> org.apache.cassandra.thrift.CassandraDaemon.setup(CassandraDaemon.java:55)
> > at
> >
> org.apache.cassandra.service.AbstractCassandraDaemon.activate(AbstractCassandraDaemon.java:216)
> > at
> >
> org.apache.cassandra.thrift.CassandraDaemon.main(CassandraDaemon.java:134)
> >
> > I am looking for advice on how to debug this.
> >
> > Thanks,
> > --
> >
> > Amin
> >
> >
> >
> >
> >
>
--
*Amin
*
Re: Too many open files Exception + java.lang.ArithmeticException: /
by zero
Posted by Ryan King <ry...@twitter.com>.
Are you creating a new connection for each row you insert (and if so
are you closing it)?
-ryan
On Wed, Dec 15, 2010 at 8:13 AM, Amin Sakka, Novapost
<am...@novapost.fr> wrote:
> Hello,
> I'm using cassandra 0.7.0 rc1, a single node configuration, replication
> factor 1, random partitioner, 2 GO heap size.
> I ran my hector client to insert 5.000.000 rows but after a couple of hours,
> the following Exception occurs :
>
> WARN [main] 2010-12-15 16:38:53,335 CustomTThreadPoolServer.java (line 104)
> Transport error occurred during acceptance of message.
> org.apache.thrift.transport.TTransportException: java.net.SocketException:
> Too many open files
> at
> org.apache.thrift.transport.TServerSocket.acceptImpl(TServerSocket.java:124)
> at
> org.apache.cassandra.thrift.TCustomServerSocket.acceptImpl(TCustomServerSocket.java:67)
> at
> org.apache.cassandra.thrift.TCustomServerSocket.acceptImpl(TCustomServerSocket.java:38)
> at
> org.apache.thrift.transport.TServerTransport.accept(TServerTransport.java:31)
> at
> org.apache.cassandra.thrift.CustomTThreadPoolServer.serve(CustomTThreadPoolServer.java:98)
> at
> org.apache.cassandra.thrift.CassandraDaemon.start(CassandraDaemon.java:120)
> at
> org.apache.cassandra.service.AbstractCassandraDaemon.activate(AbstractCassandraDaemon.java:229)
> at
> org.apache.cassandra.thrift.CassandraDaemon.main(CassandraDaemon.java:134)
> Caused by: java.net.SocketException: Too many open files
> at java.net.PlainSocketImpl.socketAccept(Native Method)
> at java.net.PlainSocketImpl.accept(PlainSocketImpl.java:384)
> at java.net.ServerSocket.implAccept(ServerSocket.java:453)
> at java.net.ServerSocket.accept(ServerSocket.java:421)
> at
> org.apache.thrift.transport.TServerSocket.acceptImpl(TServerSocket.java:119)
>
> When I try to restart Cassandra, I have the following exception :
>
> ERROR 16:42:26,573 Exception encountered during startup.
> java.lang.ArithmeticException: / by zero
> at
> org.apache.cassandra.io.sstable.SSTable.estimateRowsFromIndex(SSTable.java:233)
> at
> org.apache.cassandra.io.sstable.SSTableReader.load(SSTableReader.java:284)
> at
> org.apache.cassandra.io.sstable.SSTableReader.open(SSTableReader.java:200)
> at
> org.apache.cassandra.db.ColumnFamilyStore.<init>(ColumnFamilyStore.java:225)
> at
> org.apache.cassandra.db.ColumnFamilyStore.createColumnFamilyStore(ColumnFamilyStore.java:449)
> at
> org.apache.cassandra.db.ColumnFamilyStore.addIndex(ColumnFamilyStore.java:306)
> at
> org.apache.cassandra.db.ColumnFamilyStore.<init>(ColumnFamilyStore.java:246)
> at
> org.apache.cassandra.db.ColumnFamilyStore.createColumnFamilyStore(ColumnFamilyStore.java:449)
> at
> org.apache.cassandra.db.ColumnFamilyStore.createColumnFamilyStore(ColumnFamilyStore.java:437)
> at org.apache.cassandra.db.Table.initCf(Table.java:341)
> at org.apache.cassandra.db.Table.<init>(Table.java:283)
> at org.apache.cassandra.db.Table.open(Table.java:114)
> at
> org.apache.cassandra.service.AbstractCassandraDaemon.setup(AbstractCassandraDaemon.java:138)
> at
> org.apache.cassandra.thrift.CassandraDaemon.setup(CassandraDaemon.java:55)
> at
> org.apache.cassandra.service.AbstractCassandraDaemon.activate(AbstractCassandraDaemon.java:216)
> at
> org.apache.cassandra.thrift.CassandraDaemon.main(CassandraDaemon.java:134)
>
> I am looking for advice on how to debug this.
>
> Thanks,
> --
>
> Amin
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