[jira] [Commented] (OAK-4116) Broadcasting cache: disabled by default

["Thomas Mueller (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/OAK-4116?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15189251#comment-15189251 ] 

Thomas Mueller commented on OAK-4116:
-------------------------------------

Proposed patch:

{noformat}
===================================================================
--- src/main/java/org/apache/jackrabbit/oak/plugins/document/persistentCache/PersistentCache.java	(revision 1733250)
+++ src/main/java/org/apache/jackrabbit/oak/plugins/document/persistentCache/PersistentCache.java	(working copy)
@@ -101,7 +101,7 @@
         LOG.info("start, url={}", url);
         String[] parts = url.split(",");
         String dir = parts[0];
-        String broadcast = "tcp:";
+        String broadcast = "disabled";
         for (String p : parts) {
             if (p.equals("+docs")) {
                 cacheDocs = true;
{noformat}

> Broadcasting cache: disabled by default
> ---------------------------------------
>
>                 Key: OAK-4116
>                 URL: https://issues.apache.org/jira/browse/OAK-4116
>             Project: Jackrabbit Oak
>          Issue Type: Bug
>          Components: cache
>    Affects Versions: 1.4.0
>            Reporter: Thomas Mueller
>            Assignee: Thomas Mueller
>             Fix For: 1.4.1
>
>
> The broadcasting cache is now enabled by default, but I suggest we disable it again until we have more data, because:
> * It does a (although very limited) port scan trying to connect to other instances that are also connected (stored in MongoDB / the database).
> * We don't know the performance impact yet (we do have some data that show it's good, but we have very limited data so far).



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