shfshihuafeng opened a new issue, #2886:
URL: https://github.com/apache/drill/issues/2886
Before submitting a bug report, please verify that you are using the most
current version of Drill.
**Describe the bug**
Assign region throw exception when some region is deployed on affinity node
and some on non-affinity node
**To Reproduce**
Steps to reproduce the behavior:
NavigableMap<HRegionInfo,ServerName> regionsToScan = Maps.newTreeMap();
regionsToScan.put(new HRegionInfo(TABLE_NAME, splits[0], splits[1]),
SERVER_A);
regionsToScan.put(new HRegionInfo(TABLE_NAME, splits[1], splits[2]),
SERVER_A);
regionsToScan.put(new HRegionInfo(TABLE_NAME, splits[2], splits[3]),
SERVER_B);
regionsToScan.put(new HRegionInfo(TABLE_NAME, splits[3], splits[4]),
SERVER_B);
regionsToScan.put(new HRegionInfo(TABLE_NAME, splits[6], splits[7]),
SERVER_D);
regionsToScan.put(new HRegionInfo(TABLE_NAME, splits[7], splits[8]),
SERVER_D);
regionsToScan.put(new HRegionInfo(TABLE_NAME, splits[8], splits[9]),
SERVER_D);
regionsToScan.put(new HRegionInfo(TABLE_NAME, splits[9], splits[10]),
SERVER_D);
final List<DrillbitEndpoint> endpoints = Lists.newArrayList();
endpoints.add(DrillbitEndpoint.newBuilder().setAddress(HOST_A).setControlPort(1234).build());
endpoints.add(DrillbitEndpoint.newBuilder().setAddress(HOST_B).setControlPort(1234).build());
endpoints.add(DrillbitEndpoint.newBuilder().setAddress(HOST_C).setControlPort(1234).build());
HBaseGroupScan scan = new HBaseGroupScan();
scan.setRegionsToScan(regionsToScan);
scan.setHBaseScanSpec(new HBaseScanSpec(TABLE_NAME_STR, splits[0],
splits[0], null));
scan.applyAssignments(endpoints);
**Expected behavior**
```
A has 3 regions
B has 2 regions
C has 3 regions
```
**Error detail, log output or screenshots**
```
Caused by: java.lang.NullPointerException: null
at
org.apache.drill.exec.store.hbase.HBaseGroupScan.applyAssignments(HBaseGroupScan.java:283)
```
**Drill version**
The version of Drill you encountered the issue in.
**Additional context**
Add any other context about the problem here.
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