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From YouPeng Yang <yypvsxf19870...@gmail.com>
Subject Re: DIH issues with 4.7.1
Date Sat, 26 Apr 2014 12:57:50 GMT
Hi Rafał Kuć
  I got it,the point is  many operating systems measure time in units of
tens of milliseconds,and the  System.currentTimeMillis() is  just base on
operating system.
  In my case,I just do DIH with a crontable, Is there any possiblity to get
in that trouble?I am really can not picture what the situation may lead to
the problem.


Thanks very much.


2014-04-26 20:49 GMT+08:00 YouPeng Yang <yypvsxf19870706@gmail.com>:

> Hi Mark Miller
>   Sorry to get you in these discussion .
>   I notice that Mark Miller report this issure in
> https://issues.apache.org/jira/browse/SOLR-5734 according to
> https://issues.apache.org/jira/browse/SOLR-5721,but it just happened with
> the zookeeper.
>   If I just do DIH with JDBCDataSource ,I do not think it will get the
> problem.
>   Please give some hints
>
>  >> Bonus,just post the last mail I send about the problem:
>
>    I have just compare the difference between the version 4.6.0 and 4.7.1.
> Notice that the time in the getConnection function   is declared with the
> System.nanoTime in 4.7.1 ,while System.currentTimeMillis().
>   Curious about the resson for the change.the benefit of it .Is it
> neccessory?
>    I have read the SOLR-5734 ,
> https://issues.apache.org/jira/browse/SOLR-5734
>    Do some google about the difference of currentTimeMillis and nano,but
> still can not figure out it.
>
> Thank you very much.
>
>
> 2014-04-26 20:31 GMT+08:00 YouPeng Yang <yypvsxf19870706@gmail.com>:
>
> Hi
>>    I have just compare the difference between the version 4.6.0 and
>> 4.7.1. Notice that the time in the getConnection function   is declared
>> with the System.nanoTime in 4.7.1 ,while System.currentTimeMillis().
>>   Curious about the resson for the change.the benefit of it .Is it
>> neccessory?
>>    I have read the SOLR-5734 ,
>> https://issues.apache.org/jira/browse/SOLR-5734
>>    Do some google about the difference of currentTimeMillis and nano,but
>> still can not figure out it.
>>
>>
>>
>>
>> 2014-04-26 2:24 GMT+08:00 Shawn Heisey <solr@elyograg.org>:
>>
>> On 4/25/2014 11:56 AM, Hutchins, Jonathan wrote:
>>>
>>>> I recently upgraded from 4.6.1 to 4.7.1 and have found that the DIH
>>>> process that we are using takes 4x as long to complete.  The only odd
>>>> thing I notice is when I enable debug logging for the dataimporthandler
>>>> process, it appears that in the new version each sql query is resulting
>>>> in
>>>> a new connection opened through jdbcdatasource (log:
>>>> http://pastebin.com/JKh4gpmu).  Were there any changes that would
>>>> affect
>>>> the speed of running a full import?
>>>>
>>>
>>> This is most likely the problem you are experiencing:
>>>
>>> https://issues.apache.org/jira/browse/SOLR-5954
>>>
>>> The fix will be in the new 4.8 version.  The release process for 4.8 is
>>> underway right now.  A second release candidate was required yesterday.  If
>>> no further problems are encountered, the release should be made around the
>>> middle of next week.  If problems are encountered, the release will be
>>> delayed.
>>>
>>> Here's something very important that has been mentioned before:  Solr
>>> 4.8 will require Java 7.  Previously, Java 6 was required.  Java 7u55 (the
>>> current release from Oracle as I write this) is recommended as a minimum.
>>>
>>> If a 4.7.3 version is built, this is a fix that we should backport.
>>>
>>> Thanks,
>>> Shawn
>>>
>>>
>>
>

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