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Manage retention of partial snapshots in SLM (Simple version) #47833

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Merged
merged 4 commits into from
Oct 11, 2019

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gwbrown
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@gwbrown gwbrown commented Oct 9, 2019

Currently, partial snapshots will eventually build up unless they are
manually deleted. Partial snapshots may be useful if there is not a more
recent successful snapshot, but should eventually be deleted if they are
no longer useful.

With this change, partial snapshots are deleted using the following
strategy: PARTIAL snapshots will be kept until the configured
expire_after period has passed, if present, and then be deleted. If
there is no configured expire_after in the retention policy, then they
will be deleted if there is at least one more recent successful snapshot
from this policy (as they may otherwise be useful for troubleshooting
purposes). Partial snapshots are not counted towards either min_count or
max_count.

Implements the "simple" strategy described in #46988
Relates to #43663

Labelled >non-issue as SLM retention hasn't shipped yet, so this doesn't need to be in the release notes.

Currently, partial snapshots will eventually build up unless they are
manually deleted. Partial snapshots may be useful if there is not a more
recent successful snapshot, but should eventually be deleted if they are
no longer useful.

With this change, partial snapshots are deleted using the following
strategy: PARTIAL snapshots will be kept until the configured
expire_after period has passed, if present, and then be deleted. If
there is no configured expire_after in the retention policy, then they
will be deleted if there is at least one more recent successful snapshot
from this policy (as they may otherwise be useful for troubleshooting
purposes). Partial snapshots are not counted towards either min_count or
max_count.
@gwbrown gwbrown added >non-issue :Data Management/ILM+SLM Index and Snapshot lifecycle management v8.0.0 v7.5.0 labels Oct 9, 2019
@gwbrown gwbrown requested a review from dakrone October 9, 2019 22:22
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Pinging @elastic/es-core-features (:Core/Features/ILM+SLM)

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I left a couple of comments, related to the tests. This LGTM otherwise.

I think we also need to add documentation to the slm-retention.asciidoc file (it can be a separate PR) about exactly how our retention treats FAILURE and PARTIAL snapshots.

@gwbrown gwbrown merged commit a75fc33 into elastic:master Oct 11, 2019
gwbrown added a commit to gwbrown/elasticsearch that referenced this pull request Oct 12, 2019
Currently, partial snapshots will eventually build up unless they are
manually deleted. Partial snapshots may be useful if there is not a more
recent successful snapshot, but should eventually be deleted if they are
no longer useful.

With this change, partial snapshots are deleted using the following
strategy: PARTIAL snapshots will be kept until the configured
expire_after period has passed, if present, and then be deleted. If
there is no configured expire_after in the retention policy, then they
will be deleted if there is at least one more recent successful snapshot
from this policy (as they may otherwise be useful for troubleshooting
purposes). Partial snapshots are not counted towards either min_count or
max_count.
howardhuanghua pushed a commit to TencentCloudES/elasticsearch that referenced this pull request Oct 14, 2019
Currently, partial snapshots will eventually build up unless they are
manually deleted. Partial snapshots may be useful if there is not a more
recent successful snapshot, but should eventually be deleted if they are
no longer useful.

With this change, partial snapshots are deleted using the following
strategy: PARTIAL snapshots will be kept until the configured
expire_after period has passed, if present, and then be deleted. If
there is no configured expire_after in the retention policy, then they
will be deleted if there is at least one more recent successful snapshot
from this policy (as they may otherwise be useful for troubleshooting
purposes). Partial snapshots are not counted towards either min_count or
max_count.
gwbrown added a commit that referenced this pull request Oct 14, 2019
Currently, partial snapshots will eventually build up unless they are
manually deleted. Partial snapshots may be useful if there is not a more
recent successful snapshot, but should eventually be deleted if they are
no longer useful.

With this change, partial snapshots are deleted using the following
strategy: PARTIAL snapshots will be kept until the configured
expire_after period has passed, if present, and then be deleted. If
there is no configured expire_after in the retention policy, then they
will be deleted if there is at least one more recent successful snapshot
from this policy (as they may otherwise be useful for troubleshooting
purposes). Partial snapshots are not counted towards either min_count or
max_count.
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4 participants