[AVRO-2817] Avro file generated using avro-1.8.2 is not readable from avro-1.9.2 for certian type of schemas - ASF JIRA

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Details

Type: Bug
Status: Resolved
Priority: Blocker
Resolution: Fixed
Affects Version/s: 1.9.2
Fix Version/s: 1.10.1
Component/s: java
Labels:
None

Description

Hello,

We observed avro file generated using avro-1.8.2 is not readable while using avro-1.9.2 if schema contains a field "default:null". Please see below.

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[mxj142:Jars]$ ls -ltr
total 168520
~~rwx~~-----@ 1 mxj142 staff 34798932 Jan 16 14:45 avro-tools-1.8.2.jar
-rwxr-xr-x@ 1 mxj142 staff 51303364 Mar 6 17:43 avro-tools-1.9.2.jar
~~rw-r~~r- 1 mxj142 staff 715 Apr 24 11:19 records.avro
[mxj142:Jars]$ java -jar avro-tools-1.8.2.jar tojson records.avro
log4j:WARN No appenders could be found for logger (org.apache.hadoop.metrics2.lib.MutableMetricsFactory).
log4j:WARN Please initialize the log4j system properly.
log4j:WARN See http://logging.apache.org/log4j/1.2/faq.html#noconfig for more info.

{"enrichmentHeader":\{"correlationId":"1","sourceId":"09b5d770-7373-462d-9517-8e5ce957793f"}

,"cx":{"dateFirst":"20200419","dateLast":"20200419"}}

{"enrichmentHeader":\{"correlationId":"2","sourceId":"0285dc49-cc5c-4717-8ea2-45e50de2f65f"}

,"cx":{"dateFirst":"20200420","dateLast":"20200420"}}
[mxj142:Jars]$
[mxj142:Jars]$
[mxj142:Jars]$
[mxj142:Jars]$
[mxj142:Jars]$
[mxj142:Jars]$ java -jar avro-tools-1.9.2.jar tojson records.avro
20/04/24 11:20:51 WARN util.NativeCodeLoader: Unable to load native-hadoop library for your platform... using builtin-java classes where applicable
Exception in thread "main" org.apache.avro.AvroTypeException: Invalid default for field enrichmentHeader: null not a {"type":"record","name":"EnrichmentHeader","namespace":"com.mxj142.commons.domain","fields":[{"name":"correlationId","type":{"type":"string","avro.java.string":"String"}},\{"name":"sourceId","type":{"type":"string","avro.java.string":"String"}}]}
at org.apache.avro.Schema.validateDefault(Schema.java:1540)
at org.apache.avro.Schema.access$500(Schema.java:87)
at org.apache.avro.Schema$Field.<init>(Schema.java:521)
at org.apache.avro.Schema.parse(Schema.java:1647)
at org.apache.avro.Schema$Parser.parse(Schema.java:1394)
at org.apache.avro.Schema$Parser.parse(Schema.java:1382)
at org.apache.avro.file.DataFileStream.initialize(DataFileStream.java:130)
at org.apache.avro.file.DataFileStream.<init>(DataFileStream.java:90)
at org.apache.avro.tool.DataFileReadTool.run(DataFileReadTool.java:93)
at org.apache.avro.tool.Main.run(Main.java:66)
at org.apache.avro.tool.Main.main(Main.java:55)
[mxj142:Jars]$

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The file "records.avro" is generated using avro-1.8.2 . It contains two records and using "avro-tools-1.8.2.jar" one can read it. If we use "avro-tools-1.9.2.jar", then "records.avro" is not readable (as shown above). The file "records.avro" is also attached for your convenience.

Let me know if you need any more information.

Thanks,

Manoj