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https://issues.apache.org/jira/browse/PHOENIX-6705?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17534487#comment-17534487
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ASF GitHub Bot commented on PHOENIX-6705:
-----------------------------------------
shahrs87 commented on PR #1433:
URL: https://github.com/apache/phoenix/pull/1433#issuecomment-1122667988
@stoty Can you please help me find out why the patch in `phoenix-core`
failed ? The link is not working.
Also this patch applies cleanly to `4.x` and `4.16` branch. If everything
looks good to you, can you please merge the changes. Thank you.
> 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
> Priority: Major
>
> 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] [<class name>] [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: <table-name>: 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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