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From "Billie Rinaldi (JIRA)" <>
Subject [jira] [Commented] (ACCUMULO-3741) Reduce incompatibilities with htrace 3.2.0-incubating
Date Tue, 15 Sep 2015 13:53:45 GMT


Billie Rinaldi commented on ACCUMULO-3741:

Looks like HDFS may skip htrace 3.2.0-incubating and go right to 4.0.0-incubating (HDFS-9080),
in which case we should use that version instead.

> Reduce incompatibilities with htrace 3.2.0-incubating
> -----------------------------------------------------
>                 Key: ACCUMULO-3741
>                 URL:
>             Project: Accumulo
>          Issue Type: Bug
>            Reporter: Billie Rinaldi
>            Assignee: Billie Rinaldi
>             Fix For: 1.8.0
>         Attachments: ACCUMULO-3741.1.patch, ACCUMULO-3741.2.patch, ACCUMULO-3741.3.patch
> HTrace 3.2.0-incubating is coming out soon and there are some significant differences
in its API.  Ideally we would like Accumulo to work with either version.  Differences include:
> * no Trace.setProcessId method
> * process ID is handled differently now; it defaults to name/IP, while before Accumulo
tracked IP manually
> * SpanReceivers are expected to set process ID if it is not provided
> * return type of Span.getKVAnnotations changed from Map<byte[],byte[]> to Map<String,String>
> * Spans can now have multiple parents (although none do yet) and getParentId has been
replaced by getParents which returns a list of longs
> * multiple parents means there is no longer a fixed root span ID; root spans just have
an empty list of parents

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