[NIFI-7495] PutParquet processor generating invalid files - Can not read value at 0 in block -1 in file - Encoding DELTA_BINARY_PACKED is only supported for type INT32

• Type: Bug
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Affects Version/s: 1.11.4
• Component/s: Core Framework
• Environment: Red Hat Enterprise Linux Server 7.6 (Maipo)
• Assignee: Unassigned
• Reporter: Henrique Neves do Nascimento
• Created: 28/May/20 19:28
• Updated: 28/May/20 19:28

Description

PutParquet processor generates invalid parquet files when the flow file has few records.

 

When the flow file has only header + 1-3 records, the PutParquet succeeds, the file is written in HDFS, but it is invalid. But when the flow file has a lot of records, the PutParquet processor also succeeds and it is possible to read the generated files.

I tried to open the invalid parquet files using parquet-tools, hive and pyspark, and all of them fails with the same error: “Can not read value at 0 in block -1 in file”.

Hive also shows me this error in the log file: Caused by: parquet.io.ParquetDecodingException: Encoding DELTA_BINARY_PACKED is only supported for type INT32.

 

To reproduce the problem, i used a GetFile processor + PutParquet writing in HDFS, NIFI version 1.11.4

 

Here is an example of the content of a file that is created, but invalid (i changed some chars):

 

timestamp,ggsn,apn,msisdn,statustype,ip,sessionid,duration

1589236199000,186.4.75.1,webapn.company.com,44895956521,Start,177945774,979cdf6b021ed038,-1,

 

And an example of a success case:

 

timestamp,ggsn,apn,msisdn,statustype,ip,sessionid,duration

1589569200000,186.6.64.1,webapn.company.com,12395856026,Start,176224166,989dhe2808a0e10c,-1,

1589569200000,186.6.96.1,webapn.company.com,12393446203,Stop,177119485,989dhe6904515cf7,3712000,

1589569200000,186.6.0.3,webapn.company.com,12394359006,Stop,-1407442482,989dhe0f010282f1,7092000,

1589569200000,186.6.96.1,webapn.company.com,12394427751,Start,177550761,989dhe6904dd35df,-1,

1589569200000,186.6.64.1,webapn.company.com,12393309416,Start,176616344,989dhe2703f93f8a,-1,

1589569200000,186.6.0.3,webapn.company.com,12394355488,Start,176177290,989dhe10505a9af1,-1,

1589569200000,186.6.64.1,webapn.company.com,12395478656,Start,176688933,989dhe2703f93f8b,-1,

1589569200000,186.6.96.1,webapn.company.com,12395214244,Start,172288204,989dhe6900c48aa7,-1,

1589569200000,186.6.64.1,webapn.company.com,12393418526,Stop,176335286,989dhe27081d0fa1,50000,

1589569200000,186.6.96.1,webapn.company.com,12394828264,Start,177952229,989dhe6900c48aa8,-1,

1589569200000,152.146.0.1,webapn.company.com,12394416031,Stop,-1405606344,989dhe49ccja1399,58000,

1589569200000,186.6.96.1,webapn.company.com,12394589217,Start,177743029,989dhe6a04ee2123,-1,

1589569200000,152.146.0.1,webapn.company.com,12394859666,Start,-1407233995,989dhe4916be3ee9,-1,

1589569200000,152.146.0.1,webapn.company.com,12393735602,Stop,-1407845029,c83b809dde72f30a,402000,

 

My PutParquet is configured to write files UNCOMPRESSED, version PARQUET_2_0, and TRUE for avro configs. He is also using a CSVReader as record reader, with this schema:

{ "namespace": "nifi", "name": "logs_radius", "type": "record", "fields": [   \{ "name": "timestamp", "type": "long" }

,

  { "name": "ggsn", "type": "string" },

  { "name": "apn", "type": "string" },

  { "name": "msisdn", "type": "string" },

  { "name": "statustype", "type": "string" },

  { "name": "ip", "type": "int" },

  { "name": "sessionid", "type": "string" },

  { "name": "duration", "type": "long" }

]

}