[HIVE-5524] Unwanted delay in getting Hive metastore connection with METASTORE_CLIENT_CONNECT_RETRY_DELAY/

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 0.10.0
• Fix Version/s: 0.13.0
• Assignee: Rajesh Balamohan
• Reporter: Rajesh Balamohan
• Created: 12/Oct/13 01:46
• Updated: 26/Dec/13 19:52
• Resolved: 26/Dec/13 19:46

Description

Reference: http://svn.apache.org/repos/asf/hive/trunk/metastore/src/java/org/apache/hadoop/hive/metastore/HiveMetaStoreClient.java

>>>>
for (URI store : metastoreUris) {
....
...
if (isConnected)

{ break; }

}

// Wait before launching the next round of connection retries.
if (retryDelaySeconds > 0) {
try

{ LOG.info("Waiting " + retryDelaySeconds + " seconds before next connection attempt."); Thread.sleep(retryDelaySeconds * 1000); }

catch (InterruptedException ignore) {}
}
>>>>

By default "hive.metastore.client.connect.retry.delay" is set to 1 second. If it is set to 10 seconds, this code will wait for 10 seconds even if a successful connection is made in first attempt itself.

This can be avoided by changing to

>>>>
if (!isConnected && retryDelaySeconds > 0) {
....
>>>>