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Version: Latest-4.0

Monitoring Metrics for Shared-data Clusters

StarRocks provides two Dashboard templates for shared-data clusters:

Shared-data Dashboard​

Shared-data Dashboard includes the following categories of monitoring metrics:

Publish Version​

Latency / QPS​

  • Description: Quantile latency, average latency, and QPS of Public Version tasks.

Queued Tasks​

  • Description: The number of Public Version tasks in the queue.

Metadata​

Get Tablet Metadata​

  • Description: Quantile latency, average latency, and QPS of Get Tablet Metadata tasks.

Put Tablet Metadata​

  • Description: Quantile latency, average latency, and QPS of Put Tablet Metadata tasks.

Get Txn Log​

  • Description: Quantile latency, average latency, and QPS of Get Txn Log tasks.

Put Txn Log​

  • Description: Quantile latency, average latency, and QPS of Put Txn Log tasks.

Metacache​

Metacache Usage​

  • Description: Metacache utilization rate.

Delvec Cache Miss Per Minute​

  • Description: Number of cache misses in Delvec Cache per minute.

Metadata Cache Miss Per Minute​

  • Description: Number of cache misses in Metadata Cache per minute.

Txn Log Cache Miss Per Minute​

  • Description: Number of cache misses in Txn Log Cache per minute.

Segment Cache Miss Per Minute​

  • Description: Number of cache misses in Segment Cache per minute.

Vacuum​

Vacuum Deletes​

  • Description: Quantile latency, average latency, and QPS of Vacuum Deletes tasks.

Errors​

  • Description: Number of failed Vacuum Deletes operations.

Loading​

Queue Size​

  • Description: Queue size of BE Async Delta Writer.

Starlet Dashboard​

Starlet Dashboard includes the following categories of monitoring metrics:

FSLIB READ IO METRICS​

fslib read io_latency (quantile)​

  • Type: Histogram
  • Description: Quantile latency for S3 reads.

fslib read io_latency (average)​

  • Type: Counter
  • Description: Average latency for S3 reads.

fslib total read data​

  • Type: Counter
  • Description: Total data size for S3 reads.

fslib read iosize (quantile)​

  • Type: Histogram
  • Description: Quantile I/O size for S3 reads.

fslib read iosize (average)​

  • Type: Counter
  • Description: Average I/O size for S3 reads.

fslib read throughput​

  • Type: Counter
  • Description: I/O throughput per second for S3 reads.

fslib read iops​

  • Type: Counter
  • Description: Number of I/O operations per second for S3 reads.

FSLIB WRITE IO METRICS​

fslib write io_latency (quantile)​

  • Type: Histogram
  • Description: Quantile latency for application writes. Please note that this value may appear lower because this metric monitors only data written to the buffer.

fslib write io_latency (average)​

  • Type: Counter
  • Description: Average latency for application writes. Please note that this value may appear lower because this metric monitors only data written to the buffer.

fslib total write data​

  • Type: Counter
  • Description: Total data size for application writes.

fslib write iosize (quantile)​

  • Type: Histogram
  • Description: Quantile I/O size for application writes.

fslib write iosize (average)​

  • Type: Counter
  • Description: Average I/O size for application writes.

fslib write throughput​

  • Type: Counter
  • Description: I/O throughput per second for application writes.

S3 IO METRICS​

fslib s3 single upload iops​

  • Type: Counter
  • Description: Number of invocations per second for S3 Put Object.

fslib s3 single upload iosize (quantile)​

  • Type: Histogram
  • Description: Quantile I/O size for S3 Put Object.

fslib s3 single upload latency (quantile)​

  • Type: Histogram
  • Description: Quantile latency for S3 Put Object.

fslib s3 multi upload iops​

  • Type: Counter
  • Description: Number of invocations per second for S3 Multi Upload Object.

fslib s3 multi upload iosize (quantile)​

  • Type: Histogram
  • Description: Quantile I/O size for S3 Multi Upload Object.

fslib s3 multi upload latency (quantile)​

  • Type: Histogram
  • Description: Quantile latency for S3 Multi Upload Object.

fslib s3 complete multi upload latency (quantile)​

  • Type: Histogram
  • Description: Quantile latency for S3 Complete Multi Upload Object.

FSLIB CACHE METRICS​

fslib cache hit ratio​

  • Type: Counter
  • Description: Cache hit ratio.

fslib cache hits/misses​

  • Type: Counter
  • Description: Number of cache hits/misses per second.

FSLIB FS METRICS​

fslib alive fs instances count​

  • Type: Gauge
  • Description: Number of file system instances that are alive.

fslib open files​

  • Type: Counter
  • Description: Cumulative number of opened files.

fslib create files​

  • Type: Counter
  • Description: Average number of files created per second.

filesystem meta operations​

  • Type: Counter
  • Description: Average number of directory listing operations per second.

fslib async caches​

  • Type: Counter
  • Description: Cumulative number of files in asynchronous cache.

fslib create files (TOTAL)​

  • Type: Counter
  • Description: Cumulative number of files created.

fslib async tasks​

  • Type: Counter
  • Description: Cumulative number of asynchronous tasks in the queue.
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