guluo created HBASE-29709:
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Summary: NPE may occur when compacting table via RawAsyncHBaseAdmin
Key: HBASE-29709
URL: https://issues.apache.org/jira/browse/HBASE-29709
Project: HBase
Issue Type: Bug
Components: asyncclient
Reporter: guluo
NPE may occur when calling RawAsyncHBaseAdmin.compact(), as follows:
{code:java}
// RawAsyncHBaseAdmin.compact()
if (locations == null || locations.isEmpty()) {
future.completeExceptionally(new TableNotFoundException(tableName));
}
CompletableFuture<?>[] compactFutures =
locations.stream().filter(l -> l.getRegion() != null)
.filter(l -> !l.getRegion().isOffline()).filter(l -> l.getServerName()
!= null)
.map(l -> compact(l.getServerName(), l.getRegion(), major,
columnFamily))
.toArray(CompletableFuture<?>[]::new); {code}
The issue is that after completing the future exceptionally when locations is
null or empty, there is no return statement.
This allows the execution to continue, which may lead to NPE issue when
locations.stream() is called.
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