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Posted to user@zookeeper.apache.org by Kevin Burton <bu...@spinn3r.com> on 2009/01/07 04:43:12 UTC
ouch, zookeeper infinite loop
Creating this node with this ACL:
Created /foo
setAcl /foo world:anyone:w
Causes the exception included below.
It's an infinite loop so it's just called over and over again filling my
console.
I'm just doing an exists( path, true ); ... setting a watch still causes the
problem.
java.lang.NullPointerException
at org.apache.jute.Utils.toCSVBuffer(Utils.java:234)
at
org.apache.jute.CsvOutputArchive.writeBuffer(CsvOutputArchive.java:101)
at
org.apache.zookeeper.proto.GetDataResponse.toString(GetDataResponse.java:48)
at java.lang.String.valueOf(String.java:2827)
at java.lang.StringBuilder.append(StringBuilder.java:115)
at
org.apache.zookeeper.ClientCnxn$Packet.toString(ClientCnxn.java:230)
at java.lang.String.valueOf(String.java:2827)
at java.lang.StringBuilder.append(StringBuilder.java:115)
at
org.apache.zookeeper.ClientCnxn$SendThread.readResponse(ClientCnxn.java:586)
at
org.apache.zookeeper.ClientCnxn$SendThread.doIO(ClientCnxn.java:626)
at
org.apache.zookeeper.ClientCnxn$SendThread.run(ClientCnxn.java:852)
java.lang.NullPointerException
at org.apache.jute.Utils.toCSVBuffer(Utils.java:234)
at
org.apache.jute.CsvOutputArchive.writeBuffer(CsvOutputArchive.java:101)
at
org.apache.zookeeper.proto.GetDataResponse.toString(GetDataResponse.java:48)
at java.lang.String.valueOf(String.java:2827)
at java.lang.StringBuilder.append(StringBuilder.java:115)
at
org.apache.zookeeper.ClientCnxn$Packet.toString(ClientCnxn.java:230)
at java.lang.String.valueOf(String.java:2827)
at java.lang.StringBuilder.append(StringBuilder.java:115)
at
org.apache.zookeeper.ClientCnxn$SendThread.readResponse(ClientCnxn.java:586)
at
org.apache.zookeeper.ClientCnxn$SendThread.doIO(ClientCnxn.java:626)
at
org.apache.zookeeper.ClientCnxn$SendThread.run(ClientCnxn.java:852)
--
Founder/CEO Spinn3r.com
Location: San Francisco, CA
AIM/YIM: sfburtonator
Skype: burtonator
Work: http://spinn3r.com
Re: ouch, zookeeper infinite loop
Posted by Patrick Hunt <ph...@apache.org>.
Other than because everyone keeps asking for support for their favorite
mechanism. ;-)
BTW, I entered a patch for ZOOKEEPER-268 just now. Turns out that the
jute code was catching the NPE and outputting it to the screen, then
eating it. So the "infinite" loop really is just each packet is being
output to the log, causing this NPE to be printed to the console every
time (looks like get data response). Anyway, I've fixed the underlying
problem that was causing the NPE and submitted as a patch along with a
test that verifies. Thanks for the report.
Patrick
Kevin Burton wrote:
> protocol buffers are nice... the variable int stuff is cool.....
> Though is the protocol very complicated? Why not write a custom hand
> written Externalizable format?
>
> These frameworks are often more trouble than they're worth for small
> protocols.
>
> Kevin
>
> On Wed, Jan 7, 2009 at 2:46 PM, Patrick Hunt <ph...@apache.org> wrote:
>
>> Whatever we do the changes should support having more than one marshaling
>> format/version co-exist. Both for b/w compatibility as well as enabling
>> different serialization mechanisms (jute or pbuffer or thrift or etch,
>> etc...)
>>
>> Patrick
>>
>>
>> Mahadev Konar wrote:
>>
>>> The version of Jute we use is really an ancient version of recordio
>>> ser/deser library in hadoop. We do want to move to some
>>> better(versioned/fast/well accepted) ser/deser library.
>>>
>>> mahadev
>>>
>>>
>>> On 1/7/09 12:08 PM, "Kevin Burton" <bu...@spinn3r.com> wrote:
>>>
>>> Ah... you think it was because it was empty? Interesting. I will have
>>>> to
>>>> play with Jute a bit.....
>>>> Kevin
>>>>
>>>> On Wed, Jan 7, 2009 at 10:07 AM, Patrick Hunt <ph...@apache.org> wrote:
>>>>
>>>> Thanks for the report, entered as:
>>>>> https://issues.apache.org/jira/browse/ZOOKEEPER-268
>>>>>
>>>>> For the time being you can work around this by setting the threshold to
>>>>> INFO for that class (in log4j.properties). Either that or just set the
>>>>> data
>>>>> to a non-empty value for the znode.
>>>>>
>>>>> Patrick
>>>>>
>>>>>
>>>>> Kevin Burton wrote:
>>>>>
>>>>> Creating this node with this ACL:
>>>>>> Created /foo
>>>>>> setAcl /foo world:anyone:w
>>>>>>
>>>>>> Causes the exception included below.
>>>>>>
>>>>>> It's an infinite loop so it's just called over and over again filling
>>>>>> my
>>>>>> console.
>>>>>>
>>>>>> I'm just doing an exists( path, true ); ... setting a watch still
>>>>>> causes
>>>>>> the
>>>>>> problem.
>>>>>>
>>>>>>
>>>>>>
>>>>>> java.lang.NullPointerException
>>>>>> at org.apache.jute.Utils.toCSVBuffer(Utils.java:234)
>>>>>> at
>>>>>> org.apache.jute.CsvOutputArchive.writeBuffer(CsvOutputArchive.java:101)
>>>>>> at
>>>>>>
>>>>>>
>>>>>> org.apache.zookeeper.proto.GetDataResponse.toString(GetDataResponse.java:48)
>>>>>> at java.lang.String.valueOf(String.java:2827)
>>>>>> at java.lang.StringBuilder.append(StringBuilder.java:115)
>>>>>> at
>>>>>> org.apache.zookeeper.ClientCnxn$Packet.toString(ClientCnxn.java:230)
>>>>>> at java.lang.String.valueOf(String.java:2827)
>>>>>> at java.lang.StringBuilder.append(StringBuilder.java:115)
>>>>>> at
>>>>>>
>>>>>>
>>>>>> org.apache.zookeeper.ClientCnxn$SendThread.readResponse(ClientCnxn.java:586)
>>>>>> at
>>>>>> org.apache.zookeeper.ClientCnxn$SendThread.doIO(ClientCnxn.java:626)
>>>>>> at
>>>>>> org.apache.zookeeper.ClientCnxn$SendThread.run(ClientCnxn.java:852)
>>>>>> java.lang.NullPointerException
>>>>>> at org.apache.jute.Utils.toCSVBuffer(Utils.java:234)
>>>>>> at
>>>>>> org.apache.jute.CsvOutputArchive.writeBuffer(CsvOutputArchive.java:101)
>>>>>> at
>>>>>>
>>>>>>
>>>>>> org.apache.zookeeper.proto.GetDataResponse.toString(GetDataResponse.java:48)
>>>>>> at java.lang.String.valueOf(String.java:2827)
>>>>>> at java.lang.StringBuilder.append(StringBuilder.java:115)
>>>>>> at
>>>>>> org.apache.zookeeper.ClientCnxn$Packet.toString(ClientCnxn.java:230)
>>>>>> at java.lang.String.valueOf(String.java:2827)
>>>>>> at java.lang.StringBuilder.append(StringBuilder.java:115)
>>>>>> at
>>>>>>
>>>>>>
>>>>>> org.apache.zookeeper.ClientCnxn$SendThread.readResponse(ClientCnxn.java:586)
>>>>>> at
>>>>>> org.apache.zookeeper.ClientCnxn$SendThread.doIO(ClientCnxn.java:626)
>>>>>> at
>>>>>> org.apache.zookeeper.ClientCnxn$SendThread.run(ClientCnxn.java:852)
>>>>>>
>>>>>>
>>>>>>
>
>
Re: ouch, zookeeper infinite loop
Posted by Kevin Burton <bu...@spinn3r.com>.
protocol buffers are nice... the variable int stuff is cool.....
Though is the protocol very complicated? Why not write a custom hand
written Externalizable format?
These frameworks are often more trouble than they're worth for small
protocols.
Kevin
On Wed, Jan 7, 2009 at 2:46 PM, Patrick Hunt <ph...@apache.org> wrote:
> Whatever we do the changes should support having more than one marshaling
> format/version co-exist. Both for b/w compatibility as well as enabling
> different serialization mechanisms (jute or pbuffer or thrift or etch,
> etc...)
>
> Patrick
>
>
> Mahadev Konar wrote:
>
>> The version of Jute we use is really an ancient version of recordio
>> ser/deser library in hadoop. We do want to move to some
>> better(versioned/fast/well accepted) ser/deser library.
>>
>> mahadev
>>
>>
>> On 1/7/09 12:08 PM, "Kevin Burton" <bu...@spinn3r.com> wrote:
>>
>> Ah... you think it was because it was empty? Interesting. I will have
>>> to
>>> play with Jute a bit.....
>>> Kevin
>>>
>>> On Wed, Jan 7, 2009 at 10:07 AM, Patrick Hunt <ph...@apache.org> wrote:
>>>
>>> Thanks for the report, entered as:
>>>> https://issues.apache.org/jira/browse/ZOOKEEPER-268
>>>>
>>>> For the time being you can work around this by setting the threshold to
>>>> INFO for that class (in log4j.properties). Either that or just set the
>>>> data
>>>> to a non-empty value for the znode.
>>>>
>>>> Patrick
>>>>
>>>>
>>>> Kevin Burton wrote:
>>>>
>>>> Creating this node with this ACL:
>>>>> Created /foo
>>>>> setAcl /foo world:anyone:w
>>>>>
>>>>> Causes the exception included below.
>>>>>
>>>>> It's an infinite loop so it's just called over and over again filling
>>>>> my
>>>>> console.
>>>>>
>>>>> I'm just doing an exists( path, true ); ... setting a watch still
>>>>> causes
>>>>> the
>>>>> problem.
>>>>>
>>>>>
>>>>>
>>>>> java.lang.NullPointerException
>>>>> at org.apache.jute.Utils.toCSVBuffer(Utils.java:234)
>>>>> at
>>>>> org.apache.jute.CsvOutputArchive.writeBuffer(CsvOutputArchive.java:101)
>>>>> at
>>>>>
>>>>>
>>>>> org.apache.zookeeper.proto.GetDataResponse.toString(GetDataResponse.java:48)
>>>>> at java.lang.String.valueOf(String.java:2827)
>>>>> at java.lang.StringBuilder.append(StringBuilder.java:115)
>>>>> at
>>>>> org.apache.zookeeper.ClientCnxn$Packet.toString(ClientCnxn.java:230)
>>>>> at java.lang.String.valueOf(String.java:2827)
>>>>> at java.lang.StringBuilder.append(StringBuilder.java:115)
>>>>> at
>>>>>
>>>>>
>>>>> org.apache.zookeeper.ClientCnxn$SendThread.readResponse(ClientCnxn.java:586)
>>>>> at
>>>>> org.apache.zookeeper.ClientCnxn$SendThread.doIO(ClientCnxn.java:626)
>>>>> at
>>>>> org.apache.zookeeper.ClientCnxn$SendThread.run(ClientCnxn.java:852)
>>>>> java.lang.NullPointerException
>>>>> at org.apache.jute.Utils.toCSVBuffer(Utils.java:234)
>>>>> at
>>>>> org.apache.jute.CsvOutputArchive.writeBuffer(CsvOutputArchive.java:101)
>>>>> at
>>>>>
>>>>>
>>>>> org.apache.zookeeper.proto.GetDataResponse.toString(GetDataResponse.java:48)
>>>>> at java.lang.String.valueOf(String.java:2827)
>>>>> at java.lang.StringBuilder.append(StringBuilder.java:115)
>>>>> at
>>>>> org.apache.zookeeper.ClientCnxn$Packet.toString(ClientCnxn.java:230)
>>>>> at java.lang.String.valueOf(String.java:2827)
>>>>> at java.lang.StringBuilder.append(StringBuilder.java:115)
>>>>> at
>>>>>
>>>>>
>>>>> org.apache.zookeeper.ClientCnxn$SendThread.readResponse(ClientCnxn.java:586)
>>>>> at
>>>>> org.apache.zookeeper.ClientCnxn$SendThread.doIO(ClientCnxn.java:626)
>>>>> at
>>>>> org.apache.zookeeper.ClientCnxn$SendThread.run(ClientCnxn.java:852)
>>>>>
>>>>>
>>>>>
>>
--
Founder/CEO Spinn3r.com
Location: San Francisco, CA
AIM/YIM: sfburtonator
Skype: burtonator
Work: http://spinn3r.com
Re: ouch, zookeeper infinite loop
Posted by Patrick Hunt <ph...@apache.org>.
Whatever we do the changes should support having more than one
marshaling format/version co-exist. Both for b/w compatibility as well
as enabling different serialization mechanisms (jute or pbuffer or
thrift or etch, etc...)
Patrick
Mahadev Konar wrote:
> The version of Jute we use is really an ancient version of recordio
> ser/deser library in hadoop. We do want to move to some
> better(versioned/fast/well accepted) ser/deser library.
>
> mahadev
>
>
> On 1/7/09 12:08 PM, "Kevin Burton" <bu...@spinn3r.com> wrote:
>
>> Ah... you think it was because it was empty? Interesting. I will have to
>> play with Jute a bit.....
>> Kevin
>>
>> On Wed, Jan 7, 2009 at 10:07 AM, Patrick Hunt <ph...@apache.org> wrote:
>>
>>> Thanks for the report, entered as:
>>> https://issues.apache.org/jira/browse/ZOOKEEPER-268
>>>
>>> For the time being you can work around this by setting the threshold to
>>> INFO for that class (in log4j.properties). Either that or just set the data
>>> to a non-empty value for the znode.
>>>
>>> Patrick
>>>
>>>
>>> Kevin Burton wrote:
>>>
>>>> Creating this node with this ACL:
>>>> Created /foo
>>>> setAcl /foo world:anyone:w
>>>>
>>>> Causes the exception included below.
>>>>
>>>> It's an infinite loop so it's just called over and over again filling my
>>>> console.
>>>>
>>>> I'm just doing an exists( path, true ); ... setting a watch still causes
>>>> the
>>>> problem.
>>>>
>>>>
>>>>
>>>> java.lang.NullPointerException
>>>> at org.apache.jute.Utils.toCSVBuffer(Utils.java:234)
>>>> at
>>>> org.apache.jute.CsvOutputArchive.writeBuffer(CsvOutputArchive.java:101)
>>>> at
>>>>
>>>> org.apache.zookeeper.proto.GetDataResponse.toString(GetDataResponse.java:48)
>>>> at java.lang.String.valueOf(String.java:2827)
>>>> at java.lang.StringBuilder.append(StringBuilder.java:115)
>>>> at
>>>> org.apache.zookeeper.ClientCnxn$Packet.toString(ClientCnxn.java:230)
>>>> at java.lang.String.valueOf(String.java:2827)
>>>> at java.lang.StringBuilder.append(StringBuilder.java:115)
>>>> at
>>>>
>>>> org.apache.zookeeper.ClientCnxn$SendThread.readResponse(ClientCnxn.java:586)
>>>> at
>>>> org.apache.zookeeper.ClientCnxn$SendThread.doIO(ClientCnxn.java:626)
>>>> at
>>>> org.apache.zookeeper.ClientCnxn$SendThread.run(ClientCnxn.java:852)
>>>> java.lang.NullPointerException
>>>> at org.apache.jute.Utils.toCSVBuffer(Utils.java:234)
>>>> at
>>>> org.apache.jute.CsvOutputArchive.writeBuffer(CsvOutputArchive.java:101)
>>>> at
>>>>
>>>> org.apache.zookeeper.proto.GetDataResponse.toString(GetDataResponse.java:48)
>>>> at java.lang.String.valueOf(String.java:2827)
>>>> at java.lang.StringBuilder.append(StringBuilder.java:115)
>>>> at
>>>> org.apache.zookeeper.ClientCnxn$Packet.toString(ClientCnxn.java:230)
>>>> at java.lang.String.valueOf(String.java:2827)
>>>> at java.lang.StringBuilder.append(StringBuilder.java:115)
>>>> at
>>>>
>>>> org.apache.zookeeper.ClientCnxn$SendThread.readResponse(ClientCnxn.java:586)
>>>> at
>>>> org.apache.zookeeper.ClientCnxn$SendThread.doIO(ClientCnxn.java:626)
>>>> at
>>>> org.apache.zookeeper.ClientCnxn$SendThread.run(ClientCnxn.java:852)
>>>>
>>>>
>
Re: ouch, zookeeper infinite loop
Posted by Mahadev Konar <ma...@yahoo-inc.com>.
The version of Jute we use is really an ancient version of recordio
ser/deser library in hadoop. We do want to move to some
better(versioned/fast/well accepted) ser/deser library.
mahadev
On 1/7/09 12:08 PM, "Kevin Burton" <bu...@spinn3r.com> wrote:
> Ah... you think it was because it was empty? Interesting. I will have to
> play with Jute a bit.....
> Kevin
>
> On Wed, Jan 7, 2009 at 10:07 AM, Patrick Hunt <ph...@apache.org> wrote:
>
>> Thanks for the report, entered as:
>> https://issues.apache.org/jira/browse/ZOOKEEPER-268
>>
>> For the time being you can work around this by setting the threshold to
>> INFO for that class (in log4j.properties). Either that or just set the data
>> to a non-empty value for the znode.
>>
>> Patrick
>>
>>
>> Kevin Burton wrote:
>>
>>> Creating this node with this ACL:
>>> Created /foo
>>> setAcl /foo world:anyone:w
>>>
>>> Causes the exception included below.
>>>
>>> It's an infinite loop so it's just called over and over again filling my
>>> console.
>>>
>>> I'm just doing an exists( path, true ); ... setting a watch still causes
>>> the
>>> problem.
>>>
>>>
>>>
>>> java.lang.NullPointerException
>>> at org.apache.jute.Utils.toCSVBuffer(Utils.java:234)
>>> at
>>> org.apache.jute.CsvOutputArchive.writeBuffer(CsvOutputArchive.java:101)
>>> at
>>>
>>> org.apache.zookeeper.proto.GetDataResponse.toString(GetDataResponse.java:48)
>>> at java.lang.String.valueOf(String.java:2827)
>>> at java.lang.StringBuilder.append(StringBuilder.java:115)
>>> at
>>> org.apache.zookeeper.ClientCnxn$Packet.toString(ClientCnxn.java:230)
>>> at java.lang.String.valueOf(String.java:2827)
>>> at java.lang.StringBuilder.append(StringBuilder.java:115)
>>> at
>>>
>>> org.apache.zookeeper.ClientCnxn$SendThread.readResponse(ClientCnxn.java:586)
>>> at
>>> org.apache.zookeeper.ClientCnxn$SendThread.doIO(ClientCnxn.java:626)
>>> at
>>> org.apache.zookeeper.ClientCnxn$SendThread.run(ClientCnxn.java:852)
>>> java.lang.NullPointerException
>>> at org.apache.jute.Utils.toCSVBuffer(Utils.java:234)
>>> at
>>> org.apache.jute.CsvOutputArchive.writeBuffer(CsvOutputArchive.java:101)
>>> at
>>>
>>> org.apache.zookeeper.proto.GetDataResponse.toString(GetDataResponse.java:48)
>>> at java.lang.String.valueOf(String.java:2827)
>>> at java.lang.StringBuilder.append(StringBuilder.java:115)
>>> at
>>> org.apache.zookeeper.ClientCnxn$Packet.toString(ClientCnxn.java:230)
>>> at java.lang.String.valueOf(String.java:2827)
>>> at java.lang.StringBuilder.append(StringBuilder.java:115)
>>> at
>>>
>>> org.apache.zookeeper.ClientCnxn$SendThread.readResponse(ClientCnxn.java:586)
>>> at
>>> org.apache.zookeeper.ClientCnxn$SendThread.doIO(ClientCnxn.java:626)
>>> at
>>> org.apache.zookeeper.ClientCnxn$SendThread.run(ClientCnxn.java:852)
>>>
>>>
>
Re: ouch, zookeeper infinite loop
Posted by Kevin Burton <bu...@spinn3r.com>.
Ah... you think it was because it was empty? Interesting. I will have to
play with Jute a bit.....
Kevin
On Wed, Jan 7, 2009 at 10:07 AM, Patrick Hunt <ph...@apache.org> wrote:
> Thanks for the report, entered as:
> https://issues.apache.org/jira/browse/ZOOKEEPER-268
>
> For the time being you can work around this by setting the threshold to
> INFO for that class (in log4j.properties). Either that or just set the data
> to a non-empty value for the znode.
>
> Patrick
>
>
> Kevin Burton wrote:
>
>> Creating this node with this ACL:
>> Created /foo
>> setAcl /foo world:anyone:w
>>
>> Causes the exception included below.
>>
>> It's an infinite loop so it's just called over and over again filling my
>> console.
>>
>> I'm just doing an exists( path, true ); ... setting a watch still causes
>> the
>> problem.
>>
>>
>>
>> java.lang.NullPointerException
>> at org.apache.jute.Utils.toCSVBuffer(Utils.java:234)
>> at
>> org.apache.jute.CsvOutputArchive.writeBuffer(CsvOutputArchive.java:101)
>> at
>>
>> org.apache.zookeeper.proto.GetDataResponse.toString(GetDataResponse.java:48)
>> at java.lang.String.valueOf(String.java:2827)
>> at java.lang.StringBuilder.append(StringBuilder.java:115)
>> at
>> org.apache.zookeeper.ClientCnxn$Packet.toString(ClientCnxn.java:230)
>> at java.lang.String.valueOf(String.java:2827)
>> at java.lang.StringBuilder.append(StringBuilder.java:115)
>> at
>>
>> org.apache.zookeeper.ClientCnxn$SendThread.readResponse(ClientCnxn.java:586)
>> at
>> org.apache.zookeeper.ClientCnxn$SendThread.doIO(ClientCnxn.java:626)
>> at
>> org.apache.zookeeper.ClientCnxn$SendThread.run(ClientCnxn.java:852)
>> java.lang.NullPointerException
>> at org.apache.jute.Utils.toCSVBuffer(Utils.java:234)
>> at
>> org.apache.jute.CsvOutputArchive.writeBuffer(CsvOutputArchive.java:101)
>> at
>>
>> org.apache.zookeeper.proto.GetDataResponse.toString(GetDataResponse.java:48)
>> at java.lang.String.valueOf(String.java:2827)
>> at java.lang.StringBuilder.append(StringBuilder.java:115)
>> at
>> org.apache.zookeeper.ClientCnxn$Packet.toString(ClientCnxn.java:230)
>> at java.lang.String.valueOf(String.java:2827)
>> at java.lang.StringBuilder.append(StringBuilder.java:115)
>> at
>>
>> org.apache.zookeeper.ClientCnxn$SendThread.readResponse(ClientCnxn.java:586)
>> at
>> org.apache.zookeeper.ClientCnxn$SendThread.doIO(ClientCnxn.java:626)
>> at
>> org.apache.zookeeper.ClientCnxn$SendThread.run(ClientCnxn.java:852)
>>
>>
--
Founder/CEO Spinn3r.com
Location: San Francisco, CA
AIM/YIM: sfburtonator
Skype: burtonator
Work: http://spinn3r.com
Re: ouch, zookeeper infinite loop
Posted by Patrick Hunt <ph...@apache.org>.
Thanks for the report, entered as:
https://issues.apache.org/jira/browse/ZOOKEEPER-268
For the time being you can work around this by setting the threshold to
INFO for that class (in log4j.properties). Either that or just set the
data to a non-empty value for the znode.
Patrick
Kevin Burton wrote:
> Creating this node with this ACL:
> Created /foo
> setAcl /foo world:anyone:w
>
> Causes the exception included below.
>
> It's an infinite loop so it's just called over and over again filling my
> console.
>
> I'm just doing an exists( path, true ); ... setting a watch still causes the
> problem.
>
>
>
> java.lang.NullPointerException
> at org.apache.jute.Utils.toCSVBuffer(Utils.java:234)
> at
> org.apache.jute.CsvOutputArchive.writeBuffer(CsvOutputArchive.java:101)
> at
> org.apache.zookeeper.proto.GetDataResponse.toString(GetDataResponse.java:48)
> at java.lang.String.valueOf(String.java:2827)
> at java.lang.StringBuilder.append(StringBuilder.java:115)
> at
> org.apache.zookeeper.ClientCnxn$Packet.toString(ClientCnxn.java:230)
> at java.lang.String.valueOf(String.java:2827)
> at java.lang.StringBuilder.append(StringBuilder.java:115)
> at
> org.apache.zookeeper.ClientCnxn$SendThread.readResponse(ClientCnxn.java:586)
> at
> org.apache.zookeeper.ClientCnxn$SendThread.doIO(ClientCnxn.java:626)
> at
> org.apache.zookeeper.ClientCnxn$SendThread.run(ClientCnxn.java:852)
> java.lang.NullPointerException
> at org.apache.jute.Utils.toCSVBuffer(Utils.java:234)
> at
> org.apache.jute.CsvOutputArchive.writeBuffer(CsvOutputArchive.java:101)
> at
> org.apache.zookeeper.proto.GetDataResponse.toString(GetDataResponse.java:48)
> at java.lang.String.valueOf(String.java:2827)
> at java.lang.StringBuilder.append(StringBuilder.java:115)
> at
> org.apache.zookeeper.ClientCnxn$Packet.toString(ClientCnxn.java:230)
> at java.lang.String.valueOf(String.java:2827)
> at java.lang.StringBuilder.append(StringBuilder.java:115)
> at
> org.apache.zookeeper.ClientCnxn$SendThread.readResponse(ClientCnxn.java:586)
> at
> org.apache.zookeeper.ClientCnxn$SendThread.doIO(ClientCnxn.java:626)
> at
> org.apache.zookeeper.ClientCnxn$SendThread.run(ClientCnxn.java:852)
>