You are viewing a plain text version of this content. The canonical link for it is here.
Posted to issues@calcite.apache.org by "Leo Tu (JIRA)" <ji...@apache.org> on 2019/06/18 16:48:00 UTC
[jira] [Created] (CALCITE-3134) Avatica Remote JDBC HttpClient may
run Infinite loop
Leo Tu created CALCITE-3134:
-------------------------------
Summary: Avatica Remote JDBC HttpClient may run Infinite loop
Key: CALCITE-3134
URL: https://issues.apache.org/jira/browse/CALCITE-3134
Project: Calcite
Issue Type: Improvement
Components: avatica
Reporter: Leo Tu
The implementation of AvaticaHttpClient
* org.apache.calcite.avatica.remote.AvaticaHttpClientImpl
or
* org.apache.calcite.avatica.remote.AvaticaCommonsHttpClientImpl
"while (true) ... continue"
i have face that client run forever when HTTP code 503.
(i.e, Nginx proxy gateway failed return 503 code always)
--------------- red color ---------
{color:#FF0000}*public* *byte*[] send(*byte*[] request){color} {
{color:#FF0000}*while* (*true*) {{color}
...
*try* (CloseableHttpResponse response = execute(post, context)) {
*final* *int* statusCode = response.getStatusLine().getStatusCode();
*if* (HttpURLConnection.*_HTTP_OK_* == statusCode
...
{color:#FF0000} {color}{color:#FF0000}} *else* *if* (HttpURLConnection.*_HTTP_UNAVAILABLE_* == statusCode) {{color}
*_LOG_*.debug("Failed to connect to server (HTTP/503), retrying");
{color:#FF0000}*continue*;{color}
}
} *catch* (NoHttpResponseException e) {
// This can happen when sitting behind a load balancer and a backend server dies
*_LOG_*.debug("The server failed to issue an HTTP response, retrying");
*continue*;
} *catch* (RuntimeException e) {
*throw* e;
} *catch* (Exception e) {
*_LOG_*.debug("Failed to execute HTTP request", e);
*throw* *new* RuntimeException(e);
}
...
--
This message was sent by Atlassian JIRA
(v7.6.3#76005)