Re: [EXTERNAL] Re: Incorrect csv parsing when delimiter used within the data

[Saurabh Gulati]

and 2 single quotes together'' are looking like a single double quote ".

Mvg/Regards
Saurabh Gulati

From: Saurabh Gulati 
Sent: 05 January 2023 12:24
To: Sean Owen 
Cc: User 
Subject: Re: [EXTERNAL] Re: Incorrect csv parsing when delimiter used within 
the data

Its the same input except that headers are also being read with csv reader.

Mvg/Regards
Saurabh Gulati

From: Sean Owen 
Sent: 04 January 2023 15:12
To: Saurabh Gulati 
Cc: User 
Subject: Re: [EXTERNAL] Re: Incorrect csv parsing when delimiter used within 
the data

That does not appear to be the same input you used in your example. What is the 
contents of test.csv?

On Wed, Jan 4, 2023 at 7:45 AM Saurabh Gulati 
mailto:saurabh.gul...@fedex.com>> wrote:
Hi @Sean Owen<mailto:sro...@gmail.com>
Probably the data is incorrect, and the source needs to fix it.
But using python's csv parser returns the correct results.

import csv

with open("/tmp/test.csv") as c_file:

csv_reader = csv.reader(c_file, delimiter=",")
for row in csv_reader:
print(row)

['a', 'b', 'c']
['1', '', ',see what "I did",\ni am still writing']
['2', '', 'abc']
And also, I don't understand why there is a distinction in outputs from 
df.show() and df.select("c").show()

Mvg/Regards
Saurabh Gulati
Data Platform

From: Sean Owen mailto:sro...@gmail.com>>
Sent: 04 January 2023 14:25
To: Saurabh Gulati mailto:saurabh.gul...@fedex.com>>
Cc: Mich Talebzadeh 
mailto:mich.talebza...@gmail.com>>; User 
mailto:user@spark.apache.org>>
Subject: Re: [EXTERNAL] Re: Incorrect csv parsing when delimiter used within 
the data

That input is just invalid as CSV for any parser. You end a quoted col without 
following with a col separator. What would the intended parsing be and how 
would it work?

On Wed, Jan 4, 2023 at 4:30 AM Saurabh Gulati 
mailto:saurabh.gul...@fedex.com>> wrote:

@Sean Owen<mailto:sro...@gmail.com> Also see the example below with quotes 
feedback:
"a","b","c"
"1","",",see what ""I did"","
"2","","abc"

Re: [EXTERNAL] Re: Incorrect csv parsing when delimiter used within the data

[Saurabh Gulati]

Its the same input except that headers are also being read with csv reader.

Mvg/Regards
Saurabh Gulati

From: Sean Owen 
Sent: 04 January 2023 15:12
To: Saurabh Gulati 
Cc: User 
Subject: Re: [EXTERNAL] Re: Incorrect csv parsing when delimiter used within 
the data

That does not appear to be the same input you used in your example. What is the 
contents of test.csv?

On Wed, Jan 4, 2023 at 7:45 AM Saurabh Gulati 
mailto:saurabh.gul...@fedex.com>> wrote:
Hi @Sean Owen<mailto:sro...@gmail.com>
Probably the data is incorrect, and the source needs to fix it.
But using python's csv parser returns the correct results.

import csv

with open("/tmp/test.csv") as c_file:

csv_reader = csv.reader(c_file, delimiter=",")
for row in csv_reader:
print(row)

['a', 'b', 'c']
['1', '', ',see what "I did",\ni am still writing']
['2', '', 'abc']
And also, I don't understand why there is a distinction in outputs from 
df.show() and df.select("c").show()

Mvg/Regards
Saurabh Gulati
Data Platform

From: Sean Owen mailto:sro...@gmail.com>>
Sent: 04 January 2023 14:25
To: Saurabh Gulati mailto:saurabh.gul...@fedex.com>>
Cc: Mich Talebzadeh 
mailto:mich.talebza...@gmail.com>>; User 
mailto:user@spark.apache.org>>
Subject: Re: [EXTERNAL] Re: Incorrect csv parsing when delimiter used within 
the data

That input is just invalid as CSV for any parser. You end a quoted col without 
following with a col separator. What would the intended parsing be and how 
would it work?

On Wed, Jan 4, 2023 at 4:30 AM Saurabh Gulati 
mailto:saurabh.gul...@fedex.com>> wrote:

@Sean Owen<mailto:sro...@gmail.com> Also see the example below with quotes 
feedback:
"a","b","c"
"1","",",see what ""I did"","
"2","","abc"

Re: [EXTERNAL] Re: Re: Incorrect csv parsing when delimiter used within the data

[Saurabh Gulati]

Yes, there are other ways to solve this but trying to understand why there is a 
difference in behaviour between df.show() and df.select("c").show()​

Mvg/Regards
Saurabh Gulati

From: Shay Elbaz 
Sent: 04 January 2023 14:54
To: Saurabh Gulati ; Sean Owen 

Cc: Mich Talebzadeh ; User 
Subject: Re: [EXTERNAL] Re: Re: Incorrect csv parsing when delimiter used 
within the data

If you have found a parser that works, simply read the data as text files, 
apply the parser manually, and convert to DataFrame (if needed at all),

From: Saurabh Gulati 
Sent: Wednesday, January 4, 2023 3:45 PM
To: Sean Owen 
Cc: Mich Talebzadeh ; User 
Subject: [EXTERNAL] Re: Re: Incorrect csv parsing when delimiter used within 
the data


ATTENTION: This email originated from outside of GM.


Hi @Sean Owen<mailto:sro...@gmail.com>
Probably the data is incorrect, and the source needs to fix it.
But using python's csv parser returns the correct results.

import csv

with open("/tmp/test.csv") as c_file:

csv_reader = csv.reader(c_file, delimiter=",")
for row in csv_reader:
print(row)

['a', 'b', 'c']
['1', '', ',see what "I did",\ni am still writing']
['2', '', 'abc']
And also, I don't understand why there is a distinction in outputs from 
df.show()​ and df.select("c").show()​

Mvg/Regards
Saurabh Gulati
Data Platform

From: Sean Owen 
Sent: 04 January 2023 14:25
To: Saurabh Gulati 
Cc: Mich Talebzadeh ; User 
Subject: Re: [EXTERNAL] Re: Incorrect csv parsing when delimiter used within 
the data

That input is just invalid as CSV for any parser. You end a quoted col without 
following with a col separator. What would the intended parsing be and how 
would it work?

On Wed, Jan 4, 2023 at 4:30 AM Saurabh Gulati 
mailto:saurabh.gul...@fedex.com>> wrote:

@Sean Owen<mailto:sro...@gmail.com> Also see the example below with quotes 
feedback:
"a","b","c"
"1","",",see what ""I did"","
"2","","abc"

Re: [EXTERNAL] Re: Incorrect csv parsing when delimiter used within the data

[Sean Owen]

That does not appear to be the same input you used in your example. What is
the contents of test.csv?

On Wed, Jan 4, 2023 at 7:45 AM Saurabh Gulati 
wrote:

> Hi @Sean Owen 
> Probably the data is incorrect, and the source needs to fix it.
> But using python's csv parser returns the correct results.
>
> import csv
>
> with open("/tmp/test.csv") as c_file:
>
> csv_reader = csv.reader(c_file, delimiter=",")
> for row in csv_reader:
> print(row)
>
> ['a', 'b', 'c']
> ['1', '', ',see what "I did",\ni am still writing']
> ['2', '', 'abc']
>
> And also, I don't understand why there is a distinction in outputs from
> df.show() and df.select("c").show()
>
> Mvg/Regards
> Saurabh Gulati
> Data Platform
> --
> *From:* Sean Owen 
> *Sent:* 04 January 2023 14:25
> *To:* Saurabh Gulati 
> *Cc:* Mich Talebzadeh ; User <
> user@spark.apache.org>
> *Subject:* Re: [EXTERNAL] Re: Incorrect csv parsing when delimiter used
> within the data
>
> That input is just invalid as CSV for any parser. You end a quoted col
> without following with a col separator. What would the intended parsing be
> and how would it work?
>
> On Wed, Jan 4, 2023 at 4:30 AM Saurabh Gulati 
> wrote:
>
>
> @Sean Owen  Also see the example below with quotes
> feedback:
>
> "a","b","c"
> "1","",",see what ""I did"","
> "2","","abc"
>
>

Re: [EXTERNAL] Re: Re: Incorrect csv parsing when delimiter used within the data

[Shay Elbaz]

If you have found a parser that works, simply read the data as text files, 
apply the parser manually, and convert to DataFrame (if needed at all),

From: Saurabh Gulati 
Sent: Wednesday, January 4, 2023 3:45 PM
To: Sean Owen 
Cc: Mich Talebzadeh ; User 
Subject: [EXTERNAL] Re: Re: Incorrect csv parsing when delimiter used within 
the data


ATTENTION: This email originated from outside of GM.


Hi @Sean Owen<mailto:sro...@gmail.com>
Probably the data is incorrect, and the source needs to fix it.
But using python's csv parser returns the correct results.

import csv

with open("/tmp/test.csv") as c_file:

csv_reader = csv.reader(c_file, delimiter=",")
for row in csv_reader:
print(row)

['a', 'b', 'c']
['1', '', ',see what "I did",\ni am still writing']
['2', '', 'abc']
And also, I don't understand why there is a distinction in outputs from 
df.show()​ and df.select("c").show()​

Mvg/Regards
Saurabh Gulati
Data Platform

From: Sean Owen 
Sent: 04 January 2023 14:25
To: Saurabh Gulati 
Cc: Mich Talebzadeh ; User 
Subject: Re: [EXTERNAL] Re: Incorrect csv parsing when delimiter used within 
the data

That input is just invalid as CSV for any parser. You end a quoted col without 
following with a col separator. What would the intended parsing be and how 
would it work?

On Wed, Jan 4, 2023 at 4:30 AM Saurabh Gulati 
mailto:saurabh.gul...@fedex.com>> wrote:

@Sean Owen<mailto:sro...@gmail.com> Also see the example below with quotes 
feedback:
"a","b","c"
"1","",",see what ""I did"","
"2","","abc"

Re: [EXTERNAL] Re: Incorrect csv parsing when delimiter used within the data

[Saurabh Gulati]

Hi @Sean Owen<mailto:sro...@gmail.com>
Probably the data is incorrect, and the source needs to fix it.
But using python's csv parser returns the correct results.

import csv

with open("/tmp/test.csv") as c_file:

csv_reader = csv.reader(c_file, delimiter=",")
for row in csv_reader:
print(row)

['a', 'b', 'c']
['1', '', ',see what "I did",\ni am still writing']
['2', '', 'abc']
And also, I don't understand why there is a distinction in outputs from 
df.show()​ and df.select("c").show()​

Mvg/Regards
Saurabh Gulati
Data Platform

From: Sean Owen 
Sent: 04 January 2023 14:25
To: Saurabh Gulati 
Cc: Mich Talebzadeh ; User 
Subject: Re: [EXTERNAL] Re: Incorrect csv parsing when delimiter used within 
the data

That input is just invalid as CSV for any parser. You end a quoted col without 
following with a col separator. What would the intended parsing be and how 
would it work?

On Wed, Jan 4, 2023 at 4:30 AM Saurabh Gulati 
mailto:saurabh.gul...@fedex.com>> wrote:

@Sean Owen<mailto:sro...@gmail.com> Also see the example below with quotes 
feedback:
"a","b","c"
"1","",",see what ""I did"","
"2","","abc"

Re: [EXTERNAL] Re: Incorrect csv parsing when delimiter used within the data

[Sean Owen]

That input is just invalid as CSV for any parser. You end a quoted col
without following with a col separator. What would the intended parsing be
and how would it work?

On Wed, Jan 4, 2023 at 4:30 AM Saurabh Gulati 
wrote:

>
> @Sean Owen  Also see the example below with quotes
> feedback:
>
> "a","b","c"
> "1","",",see what ""I did"","
> "2","","abc"
>
>

Re: [EXTERNAL] Re: Incorrect csv parsing when delimiter used within the data

[Saurabh Gulati]

Hey guys, much appreciate your quick responses.

To answer your questions,
@Mich Talebzadeh<mailto:mich.talebza...@gmail.com> We get data from multiple 
sources, and we don't have any control over what they put in. In this case the 
column is supposed to contain some feedback and it can also contain quoted 
strings.

@Sean Owen<mailto:sro...@gmail.com> Also see the example below with quotes 
feedback:
"a","b","c"
"1","",",see what ""I did"","
"2","","abc"
Here if we don't escape with "

df = spark.read.option("multiLine", True).option("enforceSchema", 
False).option("header", True).csv(f"/tmp/test.csv")

df.show(100, False)

+---+++
|a  |b   |c   |
+---+++
|1  |null|",see what ""I did""|

+---+++

df.count()

1

So, we put in "? as the escape character and then its parsed fine but the count 
is wrong.


df = spark.read.option("escape", '"').option("multiLine", 
True).option("enforceSchema", False).option("header", 
True).csv(f"/tmp/test.csv")

df.show(100, False)

+---++--+
|a  |b   |c |
+---++--+
|1  |null|,see what "I did",|
|2  |null|abc   |
+---++--+

df.count()
1

I understand its a complex case or maybe an edge case which makes it difficult 
for spark
to understand when a column ends as we have even enabled multiline=True?.

See another example below which even has multiline value for column c?.

"a","b","c"
"1","",",see what ""I did"",
i am still writing"
"2","","abc"

# with escape

df = spark.read.option("escape", '"').option("multiLine", 
True).option("enforceSchema", False).option("header", 
True).csv(f"/tmp/test.csv")

df.show(10, False)

+---++--+
|a  |b   |c |
+---++--+
|1  |null|,see what "I did",\ni am still writing|
|2  |null|abc   |
+---++--+

df.count()
1

df.select("c").show(10, False)
+--+
|c |
+--+
|see what ""I did""|
|null  |
|abc   |
+--+

# without escape "


df.show(10, False)

+---+++
|a  |b   |c   |
+---+++
|1  |null|",see what ""I did""|
|i am still writing"|null|null|
|2  |null|abc |
+---+++

df.select("c").show(10, False)

+--------+
|c   |
++
|",see what ""I did""|
|null|
|abc |
++


The issue is that it can print the complete data frame correctly with escape 
enabled,
but when you select a column or ask a count then it gives wrong output.


Regards
Saurabh

From: Mich Talebzadeh 
Sent: 04 January 2023 10:14
To: Sean Owen 
Cc: Saurabh Gulati ; User 
Subject: [EXTERNAL] Re: Incorrect csv parsing when delimiter used within the 
data

Caution! This email originated outside of FedEx. Please do not open attachments 
or click links from an unknown or suspicious origin.

What is the point of having  , as a column value? From a business point of view 
it does not signify anything IMO




 
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On Tue, 3 Jan 2023 at 20:39, Sean Owen 
mailto:sro...@g

Re: Incorrect csv parsing when delimiter used within the data

[Mich Talebzadeh]

What is the point of having  *,* as a column value? From a business point
of view it does not signify anything IMO



   view my Linkedin profile



 https://en.everybodywiki.com/Mich_Talebzadeh



*Disclaimer:* Use it at your own risk. Any and all responsibility for any
loss, damage or destruction of data or any other property which may arise
from relying on this email's technical content is explicitly disclaimed.
The author will in no case be liable for any monetary damages arising from
such loss, damage or destruction.




On Tue, 3 Jan 2023 at 20:39, Sean Owen  wrote:

> Why does the data even need cleaning? That's all perfectly correct. The
> error was setting quote to be an escape char.
>
> On Tue, Jan 3, 2023, 2:32 PM Mich Talebzadeh 
> wrote:
>
>> if you take your source CSV as below
>>
>> "a","b","c"
>> "1","",","
>> "2","","abc"
>>
>>
>> and define your code as below
>>
>>
>>csv_file="hdfs://rhes75:9000/data/stg/test/testcsv.csv"
>> # read hive table in spark
>> listing_df =
>> spark.read.format("com.databricks.spark.csv").option("inferSchema",
>> "true").option("header", "true").load(csv_file)
>> listing_df.printSchema()
>> print(f"""\n Reading from Hive table {csv_file}\n""")
>> listing_df.show(100,False)
>> listing_df.select("c").show()
>>
>>
>> results in
>>
>>
>>  Reading from Hive table hdfs://rhes75:9000/data/stg/test/testcsv.csv
>>
>> +---++---+
>> |a  |b   |c  |
>> +---++---+
>> |1  |null|,  |
>> |2  |null|abc|
>> +---++---+
>>
>> +---+
>> |  c|
>> +---+
>> |  ,|
>> |abc|
>> +---+
>>
>>
>> which assumes that "," is a value for column c in row 1
>>
>>
>> This interpretation is correct. You ought to do data cleansing before.
>>
>>
>> HTH
>>
>>
>>
>>view my Linkedin profile
>> 
>>
>>
>>  https://en.everybodywiki.com/Mich_Talebzadeh
>>
>>
>>
>> *Disclaimer:* Use it at your own risk. Any and all responsibility for
>> any loss, damage or destruction of data or any other property which may
>> arise from relying on this email's technical content is explicitly
>> disclaimed. The author will in no case be liable for any monetary damages
>> arising from such loss, damage or destruction.
>>
>>
>>
>>
>> On Tue, 3 Jan 2023 at 17:03, Sean Owen  wrote:
>>
>>> No, you've set the escape character to double-quote, when it looks like
>>> you mean for it to be the quote character (which it already is). Remove
>>> this setting, as it's incorrect.
>>>
>>> On Tue, Jan 3, 2023 at 11:00 AM Saurabh Gulati
>>>  wrote:
>>>
 Hello,
 We are seeing a case with csv data when it parses csv data incorrectly.
 The issue can be replicated using the below csv data

 "a","b","c"
 "1","",","
 "2","","abc"

 and using the spark csv read command.

 df = spark.read.format("csv")\
 .option("multiLine", True)\
 .option("escape", '"')\
 .option("enforceSchema", False) \
 .option("header", True)\
 .load(f"/tmp/test.csv")

 df.show(100, False) # prints both rows
 |a  |b   |c  |
 +---++---+
 |1  |null|,  |
 |2  |null|abc|

 df.select("c").show() # merges last column of first row and first
 column of second row
 +--+
 | c|
 +--+
 |"\n"2"|

 print(df.count()) # prints 1, should be 2


 It feels like a bug and I thought of asking the community before
 creating a bug on jira.

 Mvg/Regards
 Saurabh

Re: Incorrect csv parsing when delimiter used within the data

[Sean Owen]

Why does the data even need cleaning? That's all perfectly correct. The
error was setting quote to be an escape char.

On Tue, Jan 3, 2023, 2:32 PM Mich Talebzadeh 
wrote:

> if you take your source CSV as below
>
> "a","b","c"
> "1","",","
> "2","","abc"
>
>
> and define your code as below
>
>
>csv_file="hdfs://rhes75:9000/data/stg/test/testcsv.csv"
> # read hive table in spark
> listing_df =
> spark.read.format("com.databricks.spark.csv").option("inferSchema",
> "true").option("header", "true").load(csv_file)
> listing_df.printSchema()
> print(f"""\n Reading from Hive table {csv_file}\n""")
> listing_df.show(100,False)
> listing_df.select("c").show()
>
>
> results in
>
>
>  Reading from Hive table hdfs://rhes75:9000/data/stg/test/testcsv.csv
>
> +---++---+
> |a  |b   |c  |
> +---++---+
> |1  |null|,  |
> |2  |null|abc|
> +---++---+
>
> +---+
> |  c|
> +---+
> |  ,|
> |abc|
> +---+
>
>
> which assumes that "," is a value for column c in row 1
>
>
> This interpretation is correct. You ought to do data cleansing before.
>
>
> HTH
>
>
>
>view my Linkedin profile
> 
>
>
>  https://en.everybodywiki.com/Mich_Talebzadeh
>
>
>
> *Disclaimer:* Use it at your own risk. Any and all responsibility for any
> loss, damage or destruction of data or any other property which may arise
> from relying on this email's technical content is explicitly disclaimed.
> The author will in no case be liable for any monetary damages arising from
> such loss, damage or destruction.
>
>
>
>
> On Tue, 3 Jan 2023 at 17:03, Sean Owen  wrote:
>
>> No, you've set the escape character to double-quote, when it looks like
>> you mean for it to be the quote character (which it already is). Remove
>> this setting, as it's incorrect.
>>
>> On Tue, Jan 3, 2023 at 11:00 AM Saurabh Gulati
>>  wrote:
>>
>>> Hello,
>>> We are seeing a case with csv data when it parses csv data incorrectly.
>>> The issue can be replicated using the below csv data
>>>
>>> "a","b","c"
>>> "1","",","
>>> "2","","abc"
>>>
>>> and using the spark csv read command.
>>>
>>> df = spark.read.format("csv")\
>>> .option("multiLine", True)\
>>> .option("escape", '"')\
>>> .option("enforceSchema", False) \
>>> .option("header", True)\
>>> .load(f"/tmp/test.csv")
>>>
>>> df.show(100, False) # prints both rows
>>> |a  |b   |c  |
>>> +---++---+
>>> |1  |null|,  |
>>> |2  |null|abc|
>>>
>>> df.select("c").show() # merges last column of first row and first
>>> column of second row
>>> +--+
>>> | c|
>>> +--+
>>> |"\n"2"|
>>>
>>> print(df.count()) # prints 1, should be 2
>>>
>>>
>>> It feels like a bug and I thought of asking the community before
>>> creating a bug on jira.
>>>
>>> Mvg/Regards
>>> Saurabh
>>>
>>>

Re: Incorrect csv parsing when delimiter used within the data

[Mich Talebzadeh]

if you take your source CSV as below

"a","b","c"
"1","",","
"2","","abc"


and define your code as below


   csv_file="hdfs://rhes75:9000/data/stg/test/testcsv.csv"
# read hive table in spark
listing_df =
spark.read.format("com.databricks.spark.csv").option("inferSchema",
"true").option("header", "true").load(csv_file)
listing_df.printSchema()
print(f"""\n Reading from Hive table {csv_file}\n""")
listing_df.show(100,False)
listing_df.select("c").show()


results in


 Reading from Hive table hdfs://rhes75:9000/data/stg/test/testcsv.csv

+---++---+
|a  |b   |c  |
+---++---+
|1  |null|,  |
|2  |null|abc|
+---++---+

+---+
|  c|
+---+
|  ,|
|abc|
+---+


which assumes that "," is a value for column c in row 1


This interpretation is correct. You ought to do data cleansing before.


HTH



   view my Linkedin profile



 https://en.everybodywiki.com/Mich_Talebzadeh



*Disclaimer:* Use it at your own risk. Any and all responsibility for any
loss, damage or destruction of data or any other property which may arise
from relying on this email's technical content is explicitly disclaimed.
The author will in no case be liable for any monetary damages arising from
such loss, damage or destruction.




On Tue, 3 Jan 2023 at 17:03, Sean Owen  wrote:

> No, you've set the escape character to double-quote, when it looks like
> you mean for it to be the quote character (which it already is). Remove
> this setting, as it's incorrect.
>
> On Tue, Jan 3, 2023 at 11:00 AM Saurabh Gulati
>  wrote:
>
>> Hello,
>> We are seeing a case with csv data when it parses csv data incorrectly.
>> The issue can be replicated using the below csv data
>>
>> "a","b","c"
>> "1","",","
>> "2","","abc"
>>
>> and using the spark csv read command.
>>
>> df = spark.read.format("csv")\
>> .option("multiLine", True)\
>> .option("escape", '"')\
>> .option("enforceSchema", False) \
>> .option("header", True)\
>> .load(f"/tmp/test.csv")
>>
>> df.show(100, False) # prints both rows
>> |a  |b   |c  |
>> +---++---+
>> |1  |null|,  |
>> |2  |null|abc|
>>
>> df.select("c").show() # merges last column of first row and first column
>> of second row
>> +--+
>> | c|
>> +--+
>> |"\n"2"|
>>
>> print(df.count()) # prints 1, should be 2
>>
>>
>> It feels like a bug and I thought of asking the community before creating
>> a bug on jira.
>>
>> Mvg/Regards
>> Saurabh
>>
>>

Re: Incorrect csv parsing when delimiter used within the data

[Sean Owen]

No, you've set the escape character to double-quote, when it looks like you
mean for it to be the quote character (which it already is). Remove this
setting, as it's incorrect.

On Tue, Jan 3, 2023 at 11:00 AM Saurabh Gulati
 wrote:

> Hello,
> We are seeing a case with csv data when it parses csv data incorrectly.
> The issue can be replicated using the below csv data
>
> "a","b","c"
> "1","",","
> "2","","abc"
>
> and using the spark csv read command.
>
> df = spark.read.format("csv")\
> .option("multiLine", True)\
> .option("escape", '"')\
> .option("enforceSchema", False) \
> .option("header", True)\
> .load(f"/tmp/test.csv")
>
> df.show(100, False) # prints both rows
> |a  |b   |c  |
> +---++---+
> |1  |null|,  |
> |2  |null|abc|
>
> df.select("c").show() # merges last column of first row and first column
> of second row
> +--+
> | c|
> +--+
> |"\n"2"|
>
> print(df.count()) # prints 1, should be 2
>
>
> It feels like a bug and I thought of asking the community before creating
> a bug on jira.
>
> Mvg/Regards
> Saurabh
>
>