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From Chanh Le <giaosu...@gmail.com>
Subject Re: Why so many parquet file part when I store data in Alluxio or File?
Date Fri, 01 Jul 2016 07:07:21 GMT
Hi Ted,
I set sc.hadoopConfiguration.setBoolean("fs.hdfs.impl.disable.cache", true)
sc.hadoopConfiguration.setLong("fs.local.block.size", 268435456)
but It seems not working.




> On Jul 1, 2016, at 11:38 AM, Ted Yu <yuzhihong@gmail.com> wrote:
> 
> Looking under Alluxio source, it seems only "fs.hdfs.impl.disable.cache" is in use.
> 
> FYI
> 
> On Thu, Jun 30, 2016 at 9:30 PM, Deepak Sharma <deepakmca05@gmail.com <mailto:deepakmca05@gmail.com>>
wrote:
> Ok.
> I came across this issue.
> Not sure if you already assessed this:
> https://issues.apache.org/jira/plugins/servlet/mobile#issue/SPARK-6921 <https://issues.apache.org/jira/plugins/servlet/mobile#issue/SPARK-6921>
> The workaround mentioned may work for you .
> 
> Thanks
> Deepak
> 
> On 1 Jul 2016 9:34 am, "Chanh Le" <giaosudau@gmail.com <mailto:giaosudau@gmail.com>>
wrote:
> Hi Deepark,
> Thank for replying. The way to write into alluxio is 
> df.write.mode(SaveMode.Append).partitionBy("network_id", "time").parquet("alluxio://master1:19999/FACT_ADMIN_HOURLY
<>”)
> 
> 
> I partition by 2 columns and store. I just want when I write it automatic write a size
properly for what I already set in Alluxio 512MB per block.
> 
> 
>> On Jul 1, 2016, at 11:01 AM, Deepak Sharma <deepakmca05@gmail.com <mailto:deepakmca05@gmail.com>>
wrote:
>> 
>> Before writing coalesing your rdd to 1 .
>> It will create only 1 output file .
>> Multiple part file happens as all your executors will be writing their partitions
to separate part files.
>> 
>> Thanks
>> Deepak
>> 
>> On 1 Jul 2016 8:01 am, "Chanh Le" <giaosudau@gmail.com <mailto:giaosudau@gmail.com>>
wrote:
>> Hi everyone,
>> I am using Alluxio for storage. But I am little bit confuse why I am do set block
size of alluxio is 512MB and my file part only few KB and too many part.
>> Is that normal? Because I want to read it fast? Is that many part effect the read
operation?
>> How to set the size of file part?
>> 
>> Thanks.
>> Chanh
>> 
>> 
>> 
>>  
>> 
>> <Screen_Shot_2016-07-01_at_9_24_55_AM.png>
> 
> 


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