Amend HBASE-18830 TestCanaryTool does not check Canary monitor's error code
Adjust exception control flow to fix findbugs warning NP_NULL_ON_SOME_PATH_EXCEPTION, Possible null pointer dereference of regionSink in org.apache.hadoop.hbase.tool.Canary$RegionMonitor.run() on exception path
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@ -1028,19 +1028,14 @@ public final class Canary implements Tool {
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if (this.initAdmin()) {
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try {
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List<Future<Void>> taskFutures = new LinkedList<>();
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RegionStdOutSink regionSink = null;
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try {
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regionSink = this.getSink();
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} catch (RuntimeException e) {
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LOG.error("Run RegionMonitor failed!", e);
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this.errorCode = ERROR_EXIT_CODE;
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}
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RegionStdOutSink regionSink = this.getSink();
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if (this.targets != null && this.targets.length > 0) {
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String[] tables = generateMonitorTables(this.targets);
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// Check to see that each table name passed in the -readTableTimeouts argument is also passed as a monitor target.
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if (! new HashSet<>(Arrays.asList(tables)).containsAll(this.configuredReadTableTimeouts.keySet())) {
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LOG.error("-readTableTimeouts can only specify read timeouts for monitor targets passed via command line.");
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this.errorCode = USAGE_EXIT_CODE;
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return;
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}
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this.initialized = true;
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for (String table : tables) {
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@ -1103,7 +1098,9 @@ public final class Canary implements Tool {
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} catch (Exception e) {
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LOG.error("Run regionMonitor failed", e);
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this.errorCode = ERROR_EXIT_CODE;
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}
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} finally {
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this.done = true;
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}
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}
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this.done = true;
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}
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