dcapwell commented on code in PR #2104:
URL: https://github.com/apache/cassandra/pull/2104#discussion_r1132709890
##########
src/java/org/apache/cassandra/streaming/StreamSession.java:
##########
@@ -1340,32 +1338,41 @@ public String toString()
'}';
}
- public static Throwable boundStackTrace(Throwable e, int limit)
+ public static StringBuilder boundStackTrace(Throwable e, int limit)
{
Set<Throwable> visited = Collections.newSetFromMap(new
IdentityHashMap<>());
- return boundStackTrace(e, limit, visited);
+ StringBuilder out = new StringBuilder();
+ return boundStackTrace(e, limit, visited, out);
}
- public static Throwable boundStackTrace(Throwable e, int limit,
Set<Throwable> visited)
+ public static StringBuilder boundStackTrace(Throwable e, int limit,
Set<Throwable> visited, StringBuilder out)
{
if (e == null)
- return e;
+ return null;
if (!visited.add(e))
- return e;
+ return out.append("[CIRCULAR REFERENCE:
").append(e.getClass().getName()).append(":
").append(e.getMessage()).append("]");
visited.add(e);
if (e.getStackTrace().length == 0 || e.getStackTrace().length < limit)
{
- boundStackTrace(e.getCause(), limit, visited);
- return e;
+ out.append(e.getClass().getName()).append(":
").append(e.getMessage()).append('\n');
+ boundStackTrace(e.getCause(), limit, visited, out);
+ return out;
}
StackTraceElement[] stackTrace = e.getStackTrace();
- StackTraceElement[] limitedStackTrace = Arrays.copyOfRange(stackTrace,
0, limit);
- e.setStackTrace(limitedStackTrace);
- boundStackTrace(e.getCause(), limit, visited);
+ StringBuilder stackTraceBuilder = new StringBuilder();
Review Comment:
why are you creating a new `StringBuilder`? you are just increasing memory,
should use `out`
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