55 lines
2.3 KiB
Plaintext
55 lines
2.3 KiB
Plaintext
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[discrete]
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[[breaking_80_jvm_option_changes]]
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==== JVM option changes
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TIP: {ess-skip-section}
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[[breaking_80_allocation_change_flood_stage_block_always_removed]]
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.`es.disk.auto_release_flood_stage_block` has been removed.
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[%collapsible]
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====
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*Details* +
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If a node exceeds the flood-stage disk watermark then we add a block to all of
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its indices to prevent further writes as a last-ditch attempt to prevent the
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node completely exhausting its disk space. By default, from 7.4 onwards the
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block is automatically removed when a node drops below the high watermark
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again, but this behaviour could be disabled by setting the system property
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`es.disk.auto_release_flood_stage_block` to `false`. This behaviour is no
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longer optional, and this system property must now not be set.
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*Impact* +
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Discontinue use of the `es.disk.auto_release_flood_stage_block` system property.
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Setting this system property will result in an error on startup.
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====
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.`es.rest.url_plus_as_space` has been removed.
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[%collapsible]
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====
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*Details* +
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Starting in version 7.4, a `+` in a URL will be encoded as `%2B` by all REST API functionality. Prior versions handled a `+` as a single space.
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In these previous versions, if your application required handling `+` as a single space, you could return to the old behaviour by setting the system property
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`es.rest.url_plus_as_space` to `true`. Note that this behaviour is deprecated and setting this system property to `true` will cease
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to be supported in version 8.
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*Impact* +
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Update your application or workflow to assume `+` in a URL is encoded as `%2B`.
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====
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.`es.unsafely_permit_handshake_from_incompatible_builds` has been removed.
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[%collapsible]
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====
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*Details* +
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{es} has a check that verifies that communicating pairs of nodes of the same
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version are running exactly the same build and therefore using the same wire
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format as each other. In previous versions this check can be bypassed by
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setting the system property
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`es.unsafely_permit_handshake_from_incompatible_builds` to `true`. The use of
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this system property is now forbidden.
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*Impact* +
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Discontinue use of the `es.unsafely_permit_handshake_from_incompatible_builds`
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system property, and ensure that all nodes of the same version are running
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exactly the same build. Setting this system property will result in an error
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on startup.
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====
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