shahrs87 commented on a change in pull request #2322:
URL: https://github.com/apache/hbase/pull/2322#discussion_r485216698
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File path:
hbase-client/src/main/java/org/apache/hadoop/hbase/client/ConnectionImplementation.java
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@@ -968,6 +968,19 @@ private RegionLocations locateRegionInMeta(TableName
tableName, byte[] row, bool
}
}
+ private void takeUserRegionLock() throws IOException {
+ try {
+ long waitTime = connectionConfig.getScannerTimeoutPeriod();
+ if (!userRegionLock.tryLock(waitTime, TimeUnit.MILLISECONDS)) {
Review comment:
> If callable.prepare throw the LockTimeoutException,
IIUC the code, callable.prepare will never throw LockTimeoutException. We
throw LockTimeoutException
[here](https://github.com/apache/hbase/blob/f3210c8908809fa154118454e6a23f57bc222db1/hbase-client/src/main/java/org/apache/hadoop/hbase/client/ConnectionImplementation.java#L866)
At this place we haven't created ReversedClientScanner object also. There is
one retry loop
[here](https://github.com/apache/hbase/blob/f3210c8908809fa154118454e6a23f57bc222db1/hbase-client/src/main/java/org/apache/hadoop/hbase/client/ConnectionImplementation.java#L848)
which will retry if exception is not TNFE or retries are not exhausted.
@infraio please correct me if I misunderstood anything.
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