Tom Pearce
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Articles
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How To Migrate User Credentials from One Cluster to Another
ContextWhen setting up a new Aerospike cluster, it could be useful to copy the metadata related to user credentials from an existing Aerospike implementation to a new one.Method Copy the security....
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How to move recreate or retain the System Metadata directory
ContextThe System Metadata (SMD) directory holds information on Secondary Indexes, UDF definitions, Truncation, Strong Consistency, User/Roles and more. It may be necessary to move, migrate or reta...
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Ran out of queue space XDR cannot keep up with write
Problem DescriptionAerospike log file contains this warning: WARNING (xdr): (xdr_dlog.c:568) (repeated:173276) XDR digestlog cannot keep up with writes. Dropping record. Older versions would h...
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What might cause XDR to re-log a record?
DetailThere are certain situations where XDR cannot ship a record and so the digest log entry is re-logged in the digest log so that the shipping can be attempted again later. What are these situat...
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ASD fails to start after a cold restart due to set limit breach on a namespace
Problem DescriptionASD fails to start up after a cold restart when the set limit for a namespace (1023) is breached, this happens due to the resurrection of non durably deleted records by cold rest...
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XDR Slowdown During Migration
Problem DescriptionWhen a cluster is shipping to a remote DC via XDR and cluster events have triggered migrations, XDR shipping to the remote DC slows down.ExplanationThis is an expected consequenc...
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How does Rack Aware and Prefer Uniform Balance interact
DetailBoth rack awareness and uniform balance affect the distribution of partitions across nodes. What happens when a cluster has both enabled?AnswerUniform balance does not take rack-id into accou...
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Unable to access my local disk or programs after installing Aerospike
Problem DescriptionOn installing Aerospike with the following namespace configuration, I am unable to access any of my local disk or programs. Aerospike is working as expected. namespace test { ...
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Batch transaction against a set with set level permissions throws role violation
Problem DescriptionWhen a role has been given set level permissions, when a batch call is made as follows, a role violation error is returned even if the user has the role with correct permissions:...
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Is there an IO operation during a query with includeBinData False against TTL
DetailMy application uses predicate filtering and has includeBinData set to false. In what scenario would it incur an IO operation? qp.includeBinData=false; RecordSet rs = client.query(qp, genStat...