Thanks!
On Sat, Mar 14, 2015 at 3:31 AM, Michael Armbrust mich...@databricks.com
wrote:
Here is the JIRA: https://issues.apache.org/jira/browse/SPARK-6315
On Thu, Mar 12, 2015 at 11:00 PM, Michael Armbrust mich...@databricks.com
wrote:
We are looking at the issue and will likely fix it for Spark 1.3.1.
On Thu, Mar 12, 2015 at 8:25 PM, giive chen thegi...@gmail.com wrote:
Hi all
My team has the same issue. It looks like Spark 1.3's sparkSQL cannot
read
parquet file generated by Spark 1.1. It will cost a lot of migration
work
when we wanna to upgrade Spark 1.3.
Is there anyone can help me?
Thanks
Wisely Chen
On Tue, Mar 10, 2015 at 5:06 PM, Pei-Lun Lee pl...@appier.com wrote:
Hi,
I found that if I try to read parquet file generated by spark 1.1.1
using
1.3.0-rc3 by default settings, I got this error:
com.fasterxml.jackson.core.JsonParseException: Unrecognized token
'StructType': was expecting ('true', 'false' or 'null')
at [Source: StructType(List(StructField(a,IntegerType,false))); line:
1,
column: 11]
at
com.fasterxml.jackson.core.JsonParser._constructError(JsonParser.java:1419)
at
com.fasterxml.jackson.core.base.ParserMinimalBase._reportError(ParserMinimalBase.java:508)
at
com.fasterxml.jackson.core.json.ReaderBasedJsonParser._reportInvalidToken(ReaderBasedJsonParser.java:2300)
at
com.fasterxml.jackson.core.json.ReaderBasedJsonParser._handleOddValue(ReaderBasedJsonParser.java:1459)
at
com.fasterxml.jackson.core.json.ReaderBasedJsonParser.nextToken(ReaderBasedJsonParser.java:683)
at
com.fasterxml.jackson.databind.ObjectMapper._initForReading(ObjectMapper.java:3105)
at
com.fasterxml.jackson.databind.ObjectMapper._readMapAndClose(ObjectMapper.java:3051)
at
com.fasterxml.jackson.databind.ObjectMapper.readValue(ObjectMapper.java:2161)
at
org.json4s.jackson.JsonMethods$class.parse(JsonMethods.scala:19)
at org.json4s.jackson.JsonMethods$.parse(JsonMethods.scala:44)
at
org.apache.spark.sql.types.DataType$.fromJson(dataTypes.scala:41)
at
org.apache.spark.sql.parquet.ParquetRelation2$$anonfun$readSchema$1$$anonfun$25.apply(newParquet.scala:675)
at
org.apache.spark.sql.parquet.ParquetRelation2$$anonfun$readSchema$1$$anonfun$25.apply(newParquet.scala:675)
this is how I save parquet file with 1.1.1:
sql(select 1 as a).saveAsParquetFile(/tmp/foo)
and this is the meta data of the 1.1.1 parquet file:
creator: parquet-mr version 1.4.3
extra: org.apache.spark.sql.parquet.row.metadata =
StructType(List(StructField(a,IntegerType,false)))
by comparison, this is 1.3.0 meta:
creator: parquet-mr version 1.6.0rc3
extra: org.apache.spark.sql.parquet.row.metadata =
{type:struct,fields:[{name:a,type:integer,nullable:t
[more]...
It looks like now ParquetRelation2 is used to load parquet file by
default
and it only recognizes JSON format schema but 1.1.1 schema was case
class
string format.
Setting spark.sql.parquet.useDataSourceApi to false will fix it, but I
don't know the differences.
Is this considered a bug? We have a lot of parquet files from 1.1.1,
should
we disable data source api in order to read them if we want to upgrade
to
1.3?
Thanks,
--
Pei-Lun