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NIFI-1404: Fixed NPE that resulted on startup if there was a Provenance file that had no events 

Signed-off-by: joewitt <joewitt@apache.org>
This commit is contained in:
Mark Payne 2016-01-25 16:48:56 -05:00 committed by joewitt
parent fca0b4c433
commit 925138b6c4
1 changed files with 3 additions and 1 deletions
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4
nifi-nar-bundles/nifi-provenance-repository-bundle/nifi-persistent-provenance-repository/src/main/java/org/apache/nifi/provenance/PersistentProvenanceRepository.java
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@ -1028,7 +1028,9 @@ public class PersistentProvenanceRepository implements ProvenanceEventRepository
for (final File logFile : logFiles) { for (final File logFile : logFiles) {
try (final RecordReader reader = RecordReaders.newRecordReader(logFile, null, Integer.MAX_VALUE)) { try (final RecordReader reader = RecordReaders.newRecordReader(logFile, null, Integer.MAX_VALUE)) {
final StandardProvenanceEventRecord event = reader.nextRecord(); final StandardProvenanceEventRecord event = reader.nextRecord();
return event.getEventTime(); if (event != null) {
return event.getEventTime();
}
} catch (final IOException ioe) { } catch (final IOException ioe) {
logger.warn("Failed to obtain timestamp of first event from Provenance Event Log File {}", logFile); logger.warn("Failed to obtain timestamp of first event from Provenance Event Log File {}", logFile);
} }