[Impala-CR](cdh5-trunk) IMPALA-3092: Avro table un-queriable after add columns without a default value

["Huaisi Xu (Code Review)" <ge...@cloudera.org>]

Huaisi Xu has uploaded a new change for review.

  http://gerrit.cloudera.org:8080/2361

Change subject: IMPALA-3092: Avro table un-queriable after add columns without a default value
......................................................................

IMPALA-3092: Avro table un-queriable after add columns
without a default value

Avro-scanner used to expecte default values for all
****(can someone help fill this?) slots. With this patch
all such columns will be set to NULL.

Change-Id: Ie86421fc3da51086e566998af317faa62ba9789b
---
M be/src/exec/hdfs-avro-scanner.cc
A tests/query_test/test_avro.py
2 files changed, 54 insertions(+), 3 deletions(-)


  git pull ssh://gerrit.cloudera.org:29418/Impala refs/changes/61/2361/1
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Gerrit-MessageType: newchange
Gerrit-Change-Id: Ie86421fc3da51086e566998af317faa62ba9789b
Gerrit-PatchSet: 1
Gerrit-Project: Impala
Gerrit-Branch: cdh5-trunk
Gerrit-Owner: Huaisi Xu <hx...@cloudera.com>