andy zhou created HBASE-20340:
---------------------------------
Summary: potential null pointer exception in
org.apache.hadoop.hbase.rest.TableScanResource given empty resource
Key: HBASE-20340
URL: https://issues.apache.org/jira/browse/HBASE-20340
Project: HBase
Issue Type: Bug
Components: hbase
Affects Versions: 2.0.0-beta-2
Reporter: andy zhou
Our code analyzer has detected a potential null pointer issue in
org.apache.hadoop.hbase.rest.TableScanResource as follows:
{code:java}
// org.apache.hadoop.hbase.client.Result.java Line #244
public List<Cell> listCells() {
return isEmpty()? null: Arrays.asList(rawCells());
}
{code}
{code:java}
// org.apache.hadoop.hbase.rest.TableScanResource Line #95
List<Cell> kvs = rs.listCells();
for (Cell kv : kvs) { ... }
{code}
Given empty rs, kvs shall be null instead of an empty list, leading to
potential null pointer exception
(org.apache.hadoop.hbase.client.Result.java Line #244 and
org.apache.hadoop.hbase.rest.TableScanResource Line #95
Linkage to the code is here:
https://github.com/apache/hbase/blob/9e9b347d667e1fc6165c9f8ae5ae7052147e8895/hbase-client/src/main/java/org/apache/hadoop/hbase/client/Result.java#L244
SourceBrella Inc.
https://github.com/apache/hbase/blob/9e9b347d667e1fc6165c9f8ae5ae7052147e8895/hbase-rest/src/main/java/org/apache/hadoop/hbase/rest/TableScanResource.java#L95
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