Re: Scan States Explained

eaning of those values in the following PR > > https://github.com/apache/accumulo/pull/4827 > > Does that help? > > Keith > > On Fri, Aug 23, 2024 at 7:26 AM Logan Jones wrote: > > > Hello > > > > I was hoping to understand the different scan sta

Scan States Explained

Hello I was hoping to understand the different scan states that can be returned by the listscans commands. I've dug around for docs on ScanState but can't find anything immediately enlightening in the code. As far as I can tell, there are 3 scan states: - IDLE - RUNNING - QUEUED Any ex

Re: MutationsRejectedException

Mon, Oct 23, 2023 at 8:43 AM Logan Jones wrote: > > > Hi Ed / Josef: > > > > Yes, the violation summaries are available, but I was hoping that the > > actual mutations objects would be available somewhere on the exception. > > After looking at this more, I'm fairly

Re: MutationsRejectedException

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MutationsRejectedException

Hello everyone: When a BatchWriter receives a MutationsRejectedException, is there any way to tell exactly what mutations failed? As far as I can tell, this information does not seem to be available on the exception. Is this true? Thanks in advance, - Logan

Re: TLS Support in Accumulo

though, if you could characterize the overhead you saw, as a > point of comparison. > > On Mon, Oct 16, 2023, 23:18 Logan Jones wrote: > > > Hello: > > > > I know that Accumulo has support for TLS. When turning on TLS support, we > > noticed some pretty serious

TLS Support in Accumulo

Hello: I know that Accumulo has support for TLS. When turning on TLS support, we noticed some pretty serious performance hits as a result of turning this on in 1.10.2. Does anyone actually have TLS turned on for larger clusters? Are there any known performance problems with turning on TLS? Thanks

Re: Maintaining State in an Iterator

entire row as a single key value, so if the > client gets it then it will not request that row again. > > [1]: > > https://accumulo.apache.org/docs/2.x/apidocs/org/apache/accumulo/core/client/Scanner.html#enableIsolation() > [2]: > > https://accumulo.apache.org/docs/2.x/apidocs/

Maintaining State in an Iterator

Hello Mailing List: I have an iterator that will scan an entire table and only return keys that match these criteria: 1. If a specific CF is "invalid" according to some criteria 2. If a specific CF is missing on a row 3. If there are multiple entries for a specific CF #1 would be easy t

Re: Avro Vulnerability Update

topher wrote: > > > Accumulo doesn't use AVRO directly, so it shouldn't affect Accumulo if > you > > upgrade it for Hadoop. > > > > On Thu, Mar 30, 2023, 14:56 Logan Jones wrote: > > > >> Hello: > >> > >> Hadoop 3.3.4 has som

Avro Vulnerability Update

Hello: Hadoop 3.3.4 has some critical vulnerabilities that it pulls in from avro 1.7.7 -> jackson-mapper-asl 1.9.13 The only thing in my HDFS cluster is Accumulo. Can I safely upgrade my cluster to use Avro 1.11.X or will this break Accumulo? Thanks, - Logan

Re: Libthrift Update

uch easier jump than > putting in lots of development hours to bump it in a 1.10 release, which > you'd have to upgrade to anyway. If you're going to upgrade anyway, just go > to 2.1 which already has the updates you want. > > On Fri, Feb 24, 2023, 15:57 Logan Jones wrote:

Libthrift Update

Hello: Is there any chance that Accumulo 1.10 could get a libthrift update? There are several security vulnerabilities with the current version of libthrift (0.9.3-1), and I wasn't sure if this is something we could actually accomplish in 1.10. - Logan

Recommended Permissions

Hello: I'm working on updating our security posture for our various Accumulo users. I took a look at the Permissions Page along with the Java docs for SystemPermission

Pinning a Table to a Specific Tablet Server

Hello: I would like to know if there's a way to configure Accumulo such that a specific table is hosted by a specific tablet server. Ideally I could specify a specific tablet server, but a specific node might also be acceptable. Thanks in advance, - Logan

Re: Rollback to 1.9.3

;s running faster. You are loading the same amount of data, but is > > it going faster by chance? If so, you could be creating more garbage per > > unit time putting more pressure on the GC. Just a thought. > > > > [1] https://github.com/apache/accumulo/compare/rel/1.9.3.

Re: Rollback to 1.9.3

have to rollback? I don't know that rolling back has been > tested. > > On Fri, Nov 4, 2022 at 3:40 PM Logan Jones wrote: > > > Hello: > > > > We recently upgraded from Accumulo 1.9.3 to 1.10.2. Is it safe to roll > back > > to Accumulo 1.9.3? > > > > Thanks in advance, > > > > - Logan > > >

Rollback to 1.9.3

Hello: We recently upgraded from Accumulo 1.9.3 to 1.10.2. Is it safe to roll back to Accumulo 1.9.3? Thanks in advance, - Logan

Re: Hadoop Metrics2 and JMX

#x27;re simply > > enabling. So, this might be a question for the Hadoop general mailing > list > > if nobody knows the answer here. > > > > On Wed, Oct 12, 2022 at 1:06 PM Logan Jones > wrote: > > > > > Hello: > > > > > > I'm tr

Hadoop Metrics2 and JMX

Hello: I'm trying to figure out more about the metrics coming out of Accumulo 1.9.3 and 1.10.2. I'm currently configuring the hadoop metrics 2 system and sending that to influxDB. In theory, I could also look at the JMX metrics. Are the JMX metrics a superset of what comes out of Hadoop Metrics2?

Fate Zookeeper Cleanup

Hello: As a result of issuing user compactions with a broken iterator, we have around 70k locks that do not have associated FATE operations according to the fate print command. I believe this number is slowing down new compactions that we'd like to issue. Even if that is not the case, I believe we

Re: Behavior of Fates on Failed Compactions

l these locks? Thanks, - Logan On Thu, Jul 7, 2022 at 8:39 AM Logan Jones wrote: > Chris: > > Agreed, it would be nice if the iterators were designed to handle their > own exceptions, and that is certainly the case for this particular iterator. > > Dave: > >

Re: Behavior of Fates on Failed Compactions

it's behaving this way. There may be things we can do to try to > > handle errors more gracefully for user initiated compactions when an > > iterator throws an exception, but it's definitely a good idea to write > > custom iterators in a way that tries to handle its own

Re: Behavior of Fates on Failed Compactions

ore of a user question. Here is > fine if you're not sure. > > On Wed, Jul 6, 2022, 16:35 Logan Jones wrote: > > > Hello: > > > > I would like to discuss what happens when iterators cause user-initiated > > compactions to fail, specifically in relation to

Behavior of Fates on Failed Compactions

Hello: I would like to discuss what happens when iterators cause user-initiated compactions to fail, specifically in relation to the fate transactions. Is this the right list for this discussion? Thanks, - Logan