ChiaPing Tsai created HBASE-16855:
-------------------------------------
Summary: Avoid NPE in MetricsConnection’s construction
Key: HBASE-16855
URL: https://issues.apache.org/jira/browse/HBASE-16855
Project: HBase
Issue Type: Bug
Reporter: ChiaPing Tsai
Priority: Minor
a) The batch pool may not be assigned a value in the ConnectionImpl’s
construction.
b) The meta pool always be null in the ConnectionImpl’s construction.
For reasons outlined above, the NPE may happen in MetricsConnection’s
construction
{noformat}
final ThreadPoolExecutor batchPool = (ThreadPoolExecutor)
conn.getCurrentBatchPool();
final ThreadPoolExecutor metaPool = (ThreadPoolExecutor)
conn.getCurrentMetaLookupPool();
this.registry.register(name(this.getClass(), "executorPoolActiveThreads",
scope),
new RatioGauge() {
@Override
protected Ratio getRatio() {
return Ratio.of(batchPool.getActiveCount(),
batchPool.getMaximumPoolSize());
}
});
this.registry.register(name(this.getClass(), "metaPoolActiveThreads",
scope),
new RatioGauge() {
@Override
protected Ratio getRatio() {
return Ratio.of(metaPool.getActiveCount(),
metaPool.getMaximumPoolSize());
}
});
{noformat}
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