Hello Bharath Vissapragada, Philip Zeyliger, Impala Public Jenkins,

I'd like you to do a code review. Please visit

    http://gerrit.cloudera.org:8080/10634

to review the following change.


Change subject: IMPALA-7110. Fix errors from error-prone
......................................................................

IMPALA-7110. Fix errors from error-prone

* Fixes several cases of Preconditions.checkNotNull(<bool>) which were
  ineffective. Instead, we should use Preconditions.checkState.

* Fixed a case of synchronizing on a non-final class member, which is a
  bad practice.

* Fixed a case of trying to stringify an array instead of using Joiner
  to join it to a human-readable representation.

* Fixed a couple cases where the format string in String.format didn't
  match the number of arguments passed.

* Fixed a test where PrimitiveType objects were being used to look up
  elements in a Map<ScalarType, String>. This would always return null,
  so the test was ineffective.

I elected not to enable error-prone in the default maven profile since
it increases compilation time noticeably. It can be enabled by running
'mvn -Perrorprone'.

Even with this patch there are a bunch of warnings -- this only
addresses the issues that errorprone considers "errors".

Change-Id: Ie9bfadecb5b92bba4fc7921a6f87f249ed90e771
Reviewed-on: http://gerrit.cloudera.org:8080/10583
Reviewed-by: Bharath Vissapragada <[email protected]>
Reviewed-by: Philip Zeyliger <[email protected]>
Tested-by: Impala Public Jenkins <[email protected]>
---
M fe/pom.xml
M fe/src/main/java/org/apache/impala/analysis/CreateUdfStmt.java
M fe/src/main/java/org/apache/impala/analysis/LiteralExpr.java
M fe/src/main/java/org/apache/impala/analysis/Path.java
M fe/src/main/java/org/apache/impala/catalog/DiskIdMapper.java
M fe/src/main/java/org/apache/impala/catalog/ScalarFunction.java
M fe/src/main/java/org/apache/impala/catalog/StructType.java
M fe/src/main/java/org/apache/impala/planner/HdfsScanNode.java
M fe/src/test/java/org/apache/impala/analysis/AnalyzeExprsTest.java
M fe/src/test/java/org/apache/impala/analysis/ParserTest.java
M fe/src/test/java/org/apache/impala/hive/executor/UdfExecutorTest.java
11 files changed, 51 insertions(+), 14 deletions(-)



  git pull ssh://gerrit.cloudera.org:29418/Impala-ASF refs/changes/34/10634/1
--
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Gerrit-Project: Impala-ASF
Gerrit-Branch: 2.x
Gerrit-MessageType: newchange
Gerrit-Change-Id: Ie9bfadecb5b92bba4fc7921a6f87f249ed90e771
Gerrit-Change-Number: 10634
Gerrit-PatchSet: 1
Gerrit-Owner: Tim Armstrong <[email protected]>
Gerrit-Reviewer: Bharath Vissapragada <[email protected]>
Gerrit-Reviewer: Impala Public Jenkins <[email protected]>
Gerrit-Reviewer: Philip Zeyliger <[email protected]>

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