bvandeusen
2545e8c6ce
docker_metrics.mem_usage_bytes and docker_containers.mem_usage_bytes / mem_limit_bytes were int4 (max 2,147,483,647). A container using >2.1 GB of RAM (e.g. 8.18 GB) overflowed the column, so asyncpg raised "value out of int32 range" and the entire docker ingest batch failed — no metrics stored for any host with a large container. The I/O counters and the milestone-77 rollup/disk tables already used BigInteger; this trio (docker_001-era) was missed. - models.py: DockerMetric.mem_usage_bytes, DockerContainer.mem_usage_bytes, DockerContainer.mem_limit_bytes → BigInteger. - migration docker_008_bigint_mem: ALTER COLUMN ... TYPE BIGINT (safe in-place int4→int8 promotion). - integration regression test: persist an ~8 GB container, assert the current-state and time-series rows round-trip. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_016Jg27rgypiW2efULXJDtMC
34 lines
1.4 KiB
Python
34 lines
1.4 KiB
Python
"""Widen memory byte columns to BIGINT
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docker_metrics.mem_usage_bytes and docker_containers.mem_usage_bytes /
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mem_limit_bytes were int4, which overflows for any container using >2.1 GB
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(asyncpg: "value out of int32 range"), failing the whole ingest batch. Widen to
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BIGINT — a safe in-place int4→int8 promotion, no data rewrite.
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Revision ID: docker_008_bigint_mem
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Revises: docker_007_disk_usage
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Create Date: 2026-06-20
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"""
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from typing import Sequence, Union
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from alembic import op
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import sqlalchemy as sa
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revision: str = "docker_008_bigint_mem"
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down_revision: Union[str, None] = "docker_007_disk_usage"
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branch_labels: Union[str, Sequence[str], None] = None
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depends_on: Union[str, Sequence[str], None] = None
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def upgrade() -> None:
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op.alter_column("docker_metrics", "mem_usage_bytes", type_=sa.BigInteger())
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op.alter_column("docker_containers", "mem_usage_bytes", type_=sa.BigInteger())
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op.alter_column("docker_containers", "mem_limit_bytes", type_=sa.BigInteger())
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def downgrade() -> None:
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# Narrowing back to int4 will error if any stored value exceeds 2^31 — that's
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# the very condition this migration fixed, so downgrade is best-effort.
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op.alter_column("docker_containers", "mem_limit_bytes", type_=sa.Integer())
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op.alter_column("docker_containers", "mem_usage_bytes", type_=sa.Integer())
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op.alter_column("docker_metrics", "mem_usage_bytes", type_=sa.Integer())
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