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Report progress of COPY commands

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This commit introduces a view pg_stat_progress_copy, reporting progress
of COPY commands.  This allows rough estimates how far a running COPY
progressed, with the caveat that the total number of bytes may not be
available in some cases (e.g. when the input comes from the client).

Author: Josef Šimánek
Reviewed-by: Fujii Masao, Bharath Rupireddy, Vignesh C, Matthias van de Meent
Discussion: https://postgr.es/m/CAFp7QwqMGEi4OyyaLEK9DR0+E+oK3UtA4bEjDVCa4bNkwUY2PQ@mail.gmail.com
Discussion: https://postgr.es/m/CAFp7Qwr6_FmRM6pCO0x_a0mymOfX_Gg+FEKet4XaTGSW=LitKQ@mail.gmail.com
This commit is contained in:
Tomas Vondra
2021-01-06 21:46:26 +01:00
parent ca8217c101
commit 8a4f618e7a
10 changed files with 176 additions and 5 deletions
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1
src/include/commands/copyfrom_internal.h
View File

@@ -154,6 +154,7 @@ typedef struct CopyFromStateData
char *raw_buf;
int raw_buf_index; /* next byte to process */
int raw_buf_len; /* total # of bytes stored */
uint64 bytes_processed;/* number of bytes processed so far */
/* Shorthand for number of unconsumed bytes available in raw_buf */
#define RAW_BUF_BYTES(cstate) ((cstate)->raw_buf_len - (cstate)->raw_buf_index)
} CopyFromStateData;

5
src/include/commands/progress.h
View File

@@ -133,4 +133,9 @@
#define PROGRESS_BASEBACKUP_PHASE_WAIT_WAL_ARCHIVE 4
#define PROGRESS_BASEBACKUP_PHASE_TRANSFER_WAL 5
/* Commands of PROGRESS_COPY */
#define PROGRESS_COPY_BYTES_PROCESSED 0
#define PROGRESS_COPY_BYTES_TOTAL 1
#define PROGRESS_COPY_LINES_PROCESSED 2
#endif