szehon-ho commented on a change in pull request #2647:
URL: https://github.com/apache/hive/pull/2647#discussion_r710336872
##########
File path:
standalone-metastore/metastore-server/src/main/java/org/apache/hadoop/hive/metastore/txn/TxnHandler.java
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@@ -368,33 +368,37 @@ public TxnHandler() {
public void setConf(Configuration conf){
this.conf = conf;
+ int maxPoolSize = MetastoreConf.getIntVar(conf,
ConfVars.CONNECTION_POOLING_MAX_CONNECTIONS);
+ long getConnectionTimeoutMs = 30000;
synchronized (TxnHandler.class) {
if (connPool == null) {
- Connection dbConn = null;
- // Set up the JDBC connection pool
- try {
- int maxPoolSize = MetastoreConf.getIntVar(conf,
ConfVars.CONNECTION_POOLING_MAX_CONNECTIONS);
- long getConnectionTimeoutMs = 30000;
- connPool = setupJdbcConnectionPool(conf, maxPoolSize,
getConnectionTimeoutMs);
- /*the mutex pools should ideally be somewhat larger since some
operations require 1
+ connPool = setupJdbcConnectionPool(conf, maxPoolSize,
getConnectionTimeoutMs);
Review comment:
Do you mean eager initialization on HMS startup? I had thought it too
and initially did not want to change the behavior and add more connections for
for HMS user who do not use any Txn functions. Is it what you mean? (Not sure
all the threads will inevitably fail though, after the first succeeds they will
skip)
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