Rushabh Shah created PHOENIX-6705:
-------------------------------------
Summary: PagedRegionScanner#next throws NPE if pagedFilter is not
initialized.
Key: PHOENIX-6705
URL: https://issues.apache.org/jira/browse/PHOENIX-6705
Project: Phoenix
Issue Type: Bug
Components: core
Reporter: Rushabh Shah
Assignee: Rushabh Shah
PagedRegionScanner is throwing NPE if pagedFilter is not initialized. See the
stack trace below. We are running some version of phoenix 4.16 in conjunction
with hbase-1.6. But the problem exists in all phoenix versions.
{noformat}
[2022:05:03 12:11:50.306] [MigrationJobLogger] [INFO ]
[o.a.p.iterate.BaseResultIterators] - Failed to execute task during cancel
java.util.concurrent.ExecutionException:
org.apache.phoenix.exception.PhoenixIOException:
org.apache.hadoop.hbase.DoNotRetryIOException:
HBASE.MIGRATION_JOB,00DB0000000Dwou_IDX_COMMUNITIES.TERM_DOC_FREQUENCY\x00\x80\x00\x01c/\x1F\xBF\xB2,1536142054684.eb6044f9eca0ae1268cd7d31883e202f.:
null
at org.apache.phoenix.util.ServerUtil.createIOException(ServerUtil.java:122)
at org.apache.phoenix.util.ServerUtil.throwIOException(ServerUtil.java:88)
at
org.apache.phoenix.iterate.RegionScannerFactory$1.nextRaw(RegionScannerFactory.java:230)
at
org.apache.phoenix.coprocessor.DelegateRegionScanner.nextRaw(DelegateRegionScanner.java:82)
at
org.apache.phoenix.coprocessor.DelegateRegionScanner.nextRaw(DelegateRegionScanner.java:82)
at
org.apache.phoenix.coprocessor.BaseScannerRegionObserver$RegionScannerHolder.nextRaw(BaseScannerRegionObserver.java:340)
at
org.apache.hadoop.hbase.regionserver.RSRpcServices.scan(RSRpcServices.java:2963)
at
org.apache.hadoop.hbase.regionserver.RSRpcServices.scan(RSRpcServices.java:3212)
at
org.apache.hadoop.hbase.protobuf.generated.ClientProtos$ClientService$2.callBlockingMethod(ClientProtos.java:36804)
at org.apache.hadoop.hbase.ipc.RpcServer.call(RpcServer.java:2432)
at org.apache.hadoop.hbase.ipc.CallRunner.run(CallRunner.java:124)
at org.apache.hadoop.hbase.ipc.RpcExecutor$Handler.run(RpcExecutor.java:311)
at org.apache.hadoop.hbase.ipc.RpcExecutor$Handler.run(RpcExecutor.java:291)
Caused by: java.lang.NullPointerException
at
org.apache.phoenix.coprocessor.PagedRegionScanner.next(PagedRegionScanner.java:85)
at
org.apache.phoenix.coprocessor.PagedRegionScanner.nextRaw(PagedRegionScanner.java:97)
at
org.apache.phoenix.iterate.RegionScannerFactory$1.nextRaw(RegionScannerFactory.java:184)
... 10 more
{noformat}
This scan doesn't use PageFilter but encountered some Exception.
In the catch block, we don't check whether pagedFilter is initialized or not.
{code}
private boolean next(List<Cell> results, boolean raw) throws IOException {
try {
boolean hasMore = raw ? delegate.nextRaw(results) :
delegate.next(results);
if (pageFilter == null) {
return hasMore;
}
....
....
} catch (Exception e) {
pageFilter.init(); --------> pageFilter is not
initialized.
throw e;
}
}
{code}
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