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change fetchSize to Integer.MIN_VALUE when JdbcInputFormat is Mysql #14

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change fetchSize to Integer.MIN_VALUE when JdbcInputFormat is Mysql #14

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54 changes: 34 additions & 20 deletions flinkx-rdb/src/main/java/com/dtstack/flinkx/rdb/inputformat/JdbcInputFormat.java
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Original file line number Diff line number Diff line change
Expand Up @@ -96,40 +96,54 @@ public void configure(Configuration configuration) {

@Override
public void openInternal(InputSplit inputSplit) throws IOException {
try {
ClassUtil.forName(drivername, getClass().getClassLoader());
dbConn = DBUtil.getConnection(dbURL, username, password);
try {
ClassUtil.forName(drivername, getClass().getClassLoader());
dbConn = DBUtil.getConnection(dbURL, username, password);

if(drivername.equalsIgnoreCase("org.postgresql.Driver")){
dbConn.setAutoCommit(false);
}
if(drivername.equalsIgnoreCase("org.postgresql.Driver")){
dbConn.setAutoCommit(false);
}

statement = dbConn.prepareStatement(queryTemplate, resultSetType, resultSetConcurrency);

statement = dbConn.prepareStatement(queryTemplate, resultSetType, resultSetConcurrency);
//提前执行, 否则会由于此连接select数据没有完全返回造成异常|by lgm
if(descColumnTypeList == null) {
descColumnTypeList = DBUtil.analyzeTable(dbConn,databaseInterface,table,column);
}

if (inputSplit != null && parameterValues != null) {
if (inputSplit != null && parameterValues != null) {
for (int i = 0; i < parameterValues[inputSplit.getSplitNumber()].length; i++) {
Object param = parameterValues[inputSplit.getSplitNumber()][i];
DBUtil.setParameterValue(param,statement,i);
}
if (LOG.isDebugEnabled()) {
LOG.debug(String.format("Executing '%s' with parameters %s", queryTemplate, Arrays.deepToString(parameterValues[inputSplit.getSplitNumber()])));
}
}
}


//statement.setFetchSize(databaseInterface.getFetchSize());
//重新设定FetchSize |by lgm
if(drivername.equalsIgnoreCase("mysqlreader")) {
statement.setFetchSize(Integer.MIN_VALUE);
}
else {
statement.setFetchSize(databaseInterface.getFetchSize());
}
statement.setQueryTimeout(databaseInterface.getQueryTimeout());


statement.setFetchSize(databaseInterface.getFetchSize());
statement.setQueryTimeout(databaseInterface.getQueryTimeout());
resultSet = statement.executeQuery();
hasNext = resultSet.next();
columnCount = resultSet.getMetaData().getColumnCount();

if(descColumnTypeList == null) {
descColumnTypeList = DBUtil.analyzeTable(dbConn,databaseInterface,table,column);
resultSet = statement.executeQuery();
hasNext = resultSet.next();
columnCount = resultSet.getMetaData().getColumnCount();


} catch (SQLException se) {
throw new IllegalArgumentException("open() failed." + se.getMessage(), se);
}
} catch (SQLException se) {
throw new IllegalArgumentException("open() failed." + se.getMessage(), se);
}

LOG.info("JdbcInputFormat[" + jobName + "]open: end");
LOG.info("JdbcInputFormat[" + jobName + "]open: end");
}


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