Affects Version/s: 0.21.0
Fix Version/s: None
HADOOP-6184 added the ability to serialize the Configuration to JSON. However its inclusion of jackson-1.0.1 means that any map-reduce task that depends (directly or indirectly) on Jackson, can only use Jackson 1.0.1 APIs. The 100% fix is to give the task's classpath priority over the core/common classpath ( MAPREDUCE-1700/ MAPREDUCE-1938) so that a job can use newer revisions of the library.
For a nearer term fix, is it possible to upgrade the included Jackson library to a recent version (1.5.x+)? The APIs are backwards compatible. alernatively, its possible to eliminate the use of Jackson for this minor feature as the Configuration object could be serialized to JSON without a 3rd party library.
An ancilliary issue is that the jackson.version referenced in ivy.xml is never specified in the source tree (ivy/libraries.properties).
|Status||Open [ 1 ]||Resolved [ 5 ]|
|Resolution||Fixed [ 1 ]|